US20030118313A1 - Optical fiber separation and regrouping device - Google Patents
Optical fiber separation and regrouping device Download PDFInfo
- Publication number
- US20030118313A1 US20030118313A1 US10/309,715 US30971502A US2003118313A1 US 20030118313 A1 US20030118313 A1 US 20030118313A1 US 30971502 A US30971502 A US 30971502A US 2003118313 A1 US2003118313 A1 US 2003118313A1
- Authority
- US
- United States
- Prior art keywords
- housing
- optical fibers
- conductive elements
- input
- interior region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 68
- 238000000926 separation method Methods 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 73
- 238000005538 encapsulation Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004382 potting Methods 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims description 29
- 239000011248 coating agent Substances 0.000 claims description 27
- 239000011159 matrix material Substances 0.000 description 24
- 238000005452 bending Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/44715—Fan-out devices
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
- C03B37/035—Drawing means, e.g. drawing drums ; Traction or tensioning devices having means for deflecting or stripping-off fibres or for removing defective parts
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/44765—Terminating devices ; Cable clamps with means for strain-relieving to exterior cable layers
Definitions
- This invention relates generally to a shuffle device, and more particularly, to an optical fiber separation and regrouping device for an optical shuffle.
- Optical fibers provide a well-known medium for conveying information in data and communications systems, such as computer and telephone systems. It is well known, that optical fibers possess characteristics wherein their light transmission capability is greatest when the fiber is straight and devoid of bends, and that they are subject to signal attenuation due to bending. These bending losses can be characterized as losses due to larger, gradual bends (macrobends), and losses due to much smaller and sharper bends (microbends). Macrobends can result from winding the fiber, for example, while microbends arise because of random variations in direction of the core axis.
- Optical fibers are typically provided with protective coatings to preserve the inherent strength of the glass and to buffer the fiber from microbending induced attenuation.
- Individual optical fibers can be encapsulated in a polymer casing that protects the fiber from damage, or an optical fiber ribbon can be formed by aligning a plurality of optical fibers in a linear array and then encapsulating the fiber array in a polymer casing to form the ribbon.
- Two coatings are generally used to form a fiber optic cable or ribbon.
- the first coating which is typically applied to the surface of the optical fiber, is generally referred to as the primary coating.
- the primary coating once cured, is a soft, rubbery material that serves as a buffer to protect the fiber by relieving the stress created when the fiber is bent.
- the primary coating usually has a low glass transition temperature to provide resistance to microbending.
- the primary coating must maintain adequate adhesion to the glass fiber during thermal and hydrolytic aging, yet be strippable for splicing purposes.
- the modulus of the primary coating must be low to cushion and to protect the fiber by relieving stress on the fiber, which can induce microbending and, consequently, inefficient signal transmission. It is desirable for the primary coating to have a low glass transition temperature to ensure that the coating remains in a rubbery state throughout a broad temperature range.
- the secondary or outer coating is applied over the primary coating.
- the secondary coating functions as a hard, protective layer that prevents damage to the glass fiber during processing and use by providing desired resistance to handling forces, such as those encountered when the coated fiber is cabled.
- optical shuffle in which one fiber output from each system is directed to a different system is known as a perfect shuffle.
- an optical shuffle can be formed in one way by which an optical shuffle can be formed. That is, the stripped fibers can be grouped differently, re-encapsulated, and then output from the shuffle. Thus, a discontinuity is created in the area of re-ribbonization, and the fibers can remain undesirably exposed in that region. Moreover, the fibers are prone to strain and bending in the area of the discontinuity.
- the present invention is a separation and regrouping device comprising a housing and a plurality of conductive elements, such as optical fibers, extending through an interior region of the housing.
- the optical fibers can be encapsulated individually as fiber optic cables, or grouped together and then encapsulated to form optical fiber ribbons.
- Each optical fiber has a first coating disposed along a first portion thereof, and a second coating disposed along a second portion thereof.
- An encapsulation discontinuity is formed on each optical fiber between the first coating and the second coating.
- the housing can be pre-assembled or molded over the optical fibers to contain the optical fibers and surround the encapsulation discontinuities.
- the interior region of the housing can include a guide channel that channels the optical fibers through the interior region of the housing.
- the guide channel can be a single channel, or can include a plurality of channels.
- the guide channel can also be twisted to rotate the fibers as they extend through the housing.
- the device can also include one or more strain relief elements within the interior region of the housing that contain the optical fibers and surround the encapsulation discontinuities.
- a single strain relief element can contain a plurality of fibers, or the device can include a plurality of strain relief elements, each of which contains a single fiber.
- the housing can also include one or more potting chambers in which the optical fibers can be potted to the housing.
- a method according to the invention for organizing conductive elements includes providing a plurality of conductive elements arranged in first groups, separating the first groups into individual conductive elements, and rearranging the individual conductive elements into second groups.
- the first groups can be optical fiber ribbons, which are separated by unribbonizing the fibers (e.g., by stripping the encapsulation from the ribbon to expose the fibers).
- the unribbonized fibers can then be re-ribbonized (i.e., rearranged into a second group and encapsulated to form a second ribbon).
- a method for managing a plurality of conductive elements includes arranging a first section of the conductive elements in a first arrangement, arranging a second section of the conductive elements in a second arrangement, and enclosing a third section of the conductive elements located between the first and second sections.
- the third section of the elements can be enclosed by inserting the conductive elements in a pre-assembled shuffle device, or by encapsulating the conductive elements such as by overmolding a housing over the third section, or by potting the third section within a tubular structure.
- FIG. 1 is a longitudinal cross section of a preferred embodiment of a separation and regrouping device according to the present invention
- FIG. 2 is a cross sectional view of an exemplary input fiber matrix
- FIGS. 3A and 3B are cross sectional views of an unrotated output fiber matrix before and after re-ribbonization
- FIG. 4 is a longitudinal cross section of an alternative embodiment of a separation and regrouping device according to the present invention.
- FIG. 5 is a longitudinal cross section of still another preferred embodiment of a separation and regrouping device according to the present invention.
- FIGS. 6A and 6B are cross sectional views of a rotated output fiber matrix before and after re-ribbonization.
- a separation and regrouping device 100 for conductive elements such as optical fibers comprises a housing 102 , and a plurality of optical fibers 110 .
- Housing 102 has an input end 102 A, an interior region 104 , and an output end 102 B through which optical fibers 110 extend.
- Each optical fiber 110 is coated with a respective first coating 110 ′ disposed along a first, or input, portion 110 A thereof.
- An individual optical fiber 110 can be coated along its input portion 110 A to form an input cable 112 , or a set of optical fibers 110 can be arrayed and coated together along their respective input portions to form an input ribbon 114 .
- Device 100 can include any number of input cables 112 or input ribbons 114 , or any combination of input cables 112 and input ribbons 114 .
- the set of input cables 112 and input ribbons 114 can be configured as an input fiber matrix 116 as shown in cross section in FIG. 2.
- input matrix 116 can include three input ribbons 114 a - c , each having six optical fibers 110 a - c , respectively, although input matrix 116 can comprise any number or combination of input ribbons 114 or input cables 112 , and, in general, an input ribbon 114 can include any number of fibers from 1 to N.
- an input cable 112 can be said to be an input ribbon 114 having only one optical fiber 110 .
- input matrix 116 is oriented so that the ribbons 114 are parallel to the direction indicated by arrow C.
- housing 102 is shown to include an input aperture 120 that receives the entire input fiber matrix 116 .
- housing 102 can include a guide channel 142 that guides fibers 110 through interior region 104 of housing 102 .
- guide channel 142 includes a plurality of channels 144 that extend through housing 102 .
- Each channel 144 is sized and shaped to accommodate either a discrete cable 112 or a ribbon 114 of fibers.
- Each optical fiber 110 is coated with a respective second coating 110 ′′ disposed along a second, or output, portion 110 B thereof.
- An individual optical fiber 110 can be coated along its output portion 110 B to form an output cable 122 , or a set of optical fibers 110 can be arrayed and coated together along their respective output portions to form an output ribbon 124 .
- Device 100 can include any number of output cables 122 or output ribbons 124 , or any combination of output cables 122 and output ribbons 124 , although the total number of optical fibers 110 that extend through output end 102 B of housing 102 should equal the number. of optical fibers 110 that extend through input end 102 A of housing 102 .
- FIGS. 3A and 3B provide cross sectional views of an unrotated output fiber matrix 118 before and after re-ribbonization. Note that, in FIG. 3A, output matrix 118 is oriented so that output ribbons 124 are parallel to the direction indicated by arrow C, while in FIG. 3B, re-ribbonized output matrix 118 ′ is oriented so that output ribbons 124 ′ are perpendicular to the direction indicated by arrow C.
- Output matrix 118 can be re-ribbonized in any manner known to those in the art, although it is preferred that the encapsulation is removed from a distal portion of each ribbon by peeling, or through the use of chemicals or heat strippers, or by any other suitable technique known in the art, to expose optical fibers 110 .
- the exposed fibers are preferably encapsulated to form a plurality of output ribbons 124 a - f .
- each output ribbon 124 a - f includes one fiber 110 from each input ribbon 114 a - c.
- the process of re-ribbonizing the output fiber matrix that causes the optical fibers 110 to have a first coating 110 ′ disposed along first portion 110 A thereof and a second coating 110 ′′ disposed along second portion 110 B thereof.
- a respective encapsulation discontinuity 130 is formed on each optical fiber 110 where optical fiber 110 has no coating (i.e., the between its first, or input, coating 110 ′, and its second, or output, coating 110 ′′).
- all the respective encapsulation discontinuities 130 are formed in the same general area, or region 132 , within housing 102 .
- fiber separation and regrouping device 100 can also include one or more optional strain relief elements.
- Device 100 can include a single strain relief element 134 that surrounds all the fibers 110 in region 132 at the output end of housing 102 .
- strain relief element 134 is a small, plastic tube that contains a plurality of fibers (preferably, all of them) to keep them from bending in region 132 .
- device 100 can include one or more individual strain relief elements 136 that surround the respective discontinuities 130 of individual optical fibers 110 or where the ribbons 114 have been separated into discrete cables 112 at the input end of housing 102 .
- each strain relief element 136 is a small, plastic tube that contains an individual optical fiber 110 to keep it from bending at its encapsulation discontinuity 130 .
- housing 102 can include an input potting chamber 140 A for potting input cables 112 and input ribbons 114 .
- housing 102 can include an output potting chamber 140 B for potting output cables and ribbons.
- the potting chambers 140 A, 140 B can be filled with epoxy or other such potting material to hold the fibers in place. This stabilizes the fibers (and strain relief elements 134 , 136 , if present) and thereby reduces strain.
- device 100 can serve to enclose the fibers, without the need for any additional housing. As shown in FIG.
- output ribbons 124 ′ are oriented in the same direction as input ribbons 112 a - c (see FIG. 2). Although it should be understood that, in general, output ribbons 124 ′ can be oriented in any direction relative to input ribbons 112 , it is preferred, for routing purposes, that output ribbons 124 ′ are in the same orientation as input ribbons 112 , that is, generally parallel to the direction of arrow C. To accomplish this, a device according to the present invention can be used to rotate the ribbon matrix as it extends though the housing so that, after re-ribbonization, the output ribbons are oriented in the same direction as the input ribbons.
- Device 100 can also include one or more mounting members 146 that extend from housing 102 .
- Mounting members 146 can be used to mount device 100 to one or more substrates, such as printed circuit boards (PCBs).
- PCBs printed circuit boards
- housing 102 could be molded over the optical fibers at region 132 to contain the fibers and reduce the incidence of bending in region 132 .
- housing 102 can be made of a polymer, such as plastic, and is molded over the optical fibers.
- housing 102 ′ could be a generally tubular structure with open ends and an open interior. Once the fibers 110 are passed therethrough, housing 102 ′ could then be potted with known materials, such as epoxy. The epoxy fills the remainder of the open interior of the housing not occupied by the fibers. The epoxy retains the fibers in position and provides strain relief.
- FIG. 5 shows a cross-section of a device 200 for separating and regrouping optical fibers that includes twisted guide channels 144 .
- Device 200 is similar to device 100 , except that channels 144 are twisted.
- the fiber matrix is rotated from a first orientation at input end 102 A (as shown in FIG. 2) into a second orientation at output end 102 B (as shown in FIG. 6A) because of the twists.
- Output fiber matrix 118 can now be “re-ribbonized,” as described above, to form a rotated reribbonized output fiber matrix 118 ′′, a cross sectional view of which is depicted in FIG. 6B. Note that output ribbons 124 ′′ a - f are once again parallel to the direction given by arrow C.
- the output fiber matrix can, in general, have any orientation relative to the orientation of the input fiber matrix, (i.e., guide channel 144 can be twisted to rotate the fiber matrix any number of degrees), it is preferred that guide channel 144 is twisted to rotate the fiber matrix approximately 90 degrees so that the output ribbons after re-ribbonization can be made parallel to the input ribbons. This helps to reduce the overall size of the device.
- a fiber device according to the present invention can be sized for any application, although it is usually desirable that the device be as small as possible, especially for applications where available space is limited.
- device 100 can be about 50 mm long and have a cross section of about 10 mm ⁇ 10 mm.
Abstract
A separation and regrouping device for conductive elements such as optical fibers is disclosed. The device includes a housing and a plurality of conductive elements extending through an interior region thereof. The housing surrounds encapsulation discontinuities formed on the conductive elements. The housing can include a guide channel that channels the optical fibers through the interior region thereof and, optionally, rotates the fibers as they extend through the housing. The device can also include strain relief elements that contain the optical fibers and surround the encapsulation discontinuities, and potting chambers in which the optical fibers can be potted to the housing. Methods for organizing conductive elements are also disclosed that include providing a plurality of conductive elements arranged in first groups, separating the first groups into individual conductive elements, and rearranging the individual conductive elements into second groups.
Description
- The subject matter disclosed herein is related to the subject matter disclosed in copending application Ser. No. ______ (attorney docket BERG-2544), filed on even date herewith, entitled “Shuffle Device,” the contents of which are hereby incorporated by reference.
- This invention relates generally to a shuffle device, and more particularly, to an optical fiber separation and regrouping device for an optical shuffle.
- Optical fibers provide a well-known medium for conveying information in data and communications systems, such as computer and telephone systems. It is well known, that optical fibers possess characteristics wherein their light transmission capability is greatest when the fiber is straight and devoid of bends, and that they are subject to signal attenuation due to bending. These bending losses can be characterized as losses due to larger, gradual bends (macrobends), and losses due to much smaller and sharper bends (microbends). Macrobends can result from winding the fiber, for example, while microbends arise because of random variations in direction of the core axis.
- Optical fibers, therefore, are typically provided with protective coatings to preserve the inherent strength of the glass and to buffer the fiber from microbending induced attenuation. Individual optical fibers can be encapsulated in a polymer casing that protects the fiber from damage, or an optical fiber ribbon can be formed by aligning a plurality of optical fibers in a linear array and then encapsulating the fiber array in a polymer casing to form the ribbon.
- Two coatings are generally used to form a fiber optic cable or ribbon. The first coating, which is typically applied to the surface of the optical fiber, is generally referred to as the primary coating. The primary coating, once cured, is a soft, rubbery material that serves as a buffer to protect the fiber by relieving the stress created when the fiber is bent. The primary coating usually has a low glass transition temperature to provide resistance to microbending.
- Certain characteristics are desirable for the primary coating. For example, the primary coating must maintain adequate adhesion to the glass fiber during thermal and hydrolytic aging, yet be strippable for splicing purposes. The modulus of the primary coating must be low to cushion and to protect the fiber by relieving stress on the fiber, which can induce microbending and, consequently, inefficient signal transmission. It is desirable for the primary coating to have a low glass transition temperature to ensure that the coating remains in a rubbery state throughout a broad temperature range.
- The secondary or outer coating is applied over the primary coating. The secondary coating functions as a hard, protective layer that prevents damage to the glass fiber during processing and use by providing desired resistance to handling forces, such as those encountered when the coated fiber is cabled.
- Additionally, it is often desirable to switch information between systems that use optical fibers as information conveyance media. This can be accomplished by directing the optical fibers output from each system into one or more systems. This is known as shuffling the fibers, and the mechanism by which this is accomplished is known as an optical shuffle. An optical shuffle in which one fiber output from each system is directed to a different system is known as a perfect shuffle. Thus, in a perfect shuffle, each system can communicate with every other system.
- One way by which an optical shuffle can be formed is to strip the coatings from the fibers or ribbons inputted to the shuffle, and then “re-ribbonize” the exiting fibers. That is, the stripped fibers can be grouped differently, re-encapsulated, and then output from the shuffle. Thus, a discontinuity is created in the area of re-ribbonization, and the fibers can remain undesirably exposed in that region. Moreover, the fibers are prone to strain and bending in the area of the discontinuity.
- There is a need in the art for a compact optical shuffle that permits re-ribbonization of a plurality of optical fibers, while protecting the fibers from damage and reducing strain and bending in the discontinuity. It is an objective of the present invention, therefore, to provide an optical fiber separation and regrouping device that protects and controls bending of the optical fibers at the discontinuity.
- The present invention is a separation and regrouping device comprising a housing and a plurality of conductive elements, such as optical fibers, extending through an interior region of the housing. The optical fibers can be encapsulated individually as fiber optic cables, or grouped together and then encapsulated to form optical fiber ribbons.
- Each optical fiber has a first coating disposed along a first portion thereof, and a second coating disposed along a second portion thereof. An encapsulation discontinuity is formed on each optical fiber between the first coating and the second coating. The housing can be pre-assembled or molded over the optical fibers to contain the optical fibers and surround the encapsulation discontinuities.
- The interior region of the housing can include a guide channel that channels the optical fibers through the interior region of the housing. The guide channel can be a single channel, or can include a plurality of channels. The guide channel can also be twisted to rotate the fibers as they extend through the housing.
- The device can also include one or more strain relief elements within the interior region of the housing that contain the optical fibers and surround the encapsulation discontinuities. A single strain relief element can contain a plurality of fibers, or the device can include a plurality of strain relief elements, each of which contains a single fiber.
- To further reduce strain on the conductive elements, the housing can also include one or more potting chambers in which the optical fibers can be potted to the housing.
- A method according to the invention for organizing conductive elements includes providing a plurality of conductive elements arranged in first groups, separating the first groups into individual conductive elements, and rearranging the individual conductive elements into second groups.
- The first groups can be optical fiber ribbons, which are separated by unribbonizing the fibers (e.g., by stripping the encapsulation from the ribbon to expose the fibers). The unribbonized fibers can then be re-ribbonized (i.e., rearranged into a second group and encapsulated to form a second ribbon).
- Thus, a method according to the invention for managing a plurality of conductive elements includes arranging a first section of the conductive elements in a first arrangement, arranging a second section of the conductive elements in a second arrangement, and enclosing a third section of the conductive elements located between the first and second sections.
- The third section of the elements can be enclosed by inserting the conductive elements in a pre-assembled shuffle device, or by encapsulating the conductive elements such as by overmolding a housing over the third section, or by potting the third section within a tubular structure.
- The invention is further described in the accompanying drawings in which:
- FIG. 1 is a longitudinal cross section of a preferred embodiment of a separation and regrouping device according to the present invention;
- FIG. 2 is a cross sectional view of an exemplary input fiber matrix;
- FIGS. 3A and 3B are cross sectional views of an unrotated output fiber matrix before and after re-ribbonization;
- FIG. 4 is a longitudinal cross section of an alternative embodiment of a separation and regrouping device according to the present invention;
- FIG. 5 is a longitudinal cross section of still another preferred embodiment of a separation and regrouping device according to the present invention; and
- FIGS. 6A and 6B are cross sectional views of a rotated output fiber matrix before and after re-ribbonization.
- As shown in FIG. 1, a separation and regrouping
device 100 for conductive elements such as optical fibers comprises ahousing 102, and a plurality ofoptical fibers 110.Housing 102 has aninput end 102A, aninterior region 104, and anoutput end 102B through whichoptical fibers 110 extend. - Each
optical fiber 110 is coated with a respectivefirst coating 110′ disposed along a first, or input,portion 110A thereof. An individualoptical fiber 110 can be coated along itsinput portion 110A to form aninput cable 112, or a set ofoptical fibers 110 can be arrayed and coated together along their respective input portions to form aninput ribbon 114.Device 100 can include any number ofinput cables 112 orinput ribbons 114, or any combination ofinput cables 112 andinput ribbons 114. - In a preferred embodiment, the set of
input cables 112 andinput ribbons 114 can be configured as aninput fiber matrix 116 as shown in cross section in FIG. 2. As shown,input matrix 116 can include threeinput ribbons 114 a-c, each having sixoptical fibers 110 a-c, respectively, althoughinput matrix 116 can comprise any number or combination ofinput ribbons 114 orinput cables 112, and, in general, aninput ribbon 114 can include any number of fibers from 1 to N. Thus, for purposes of this specification, aninput cable 112 can be said to be aninput ribbon 114 having only oneoptical fiber 110. Note thatinput matrix 116 is oriented so that theribbons 114 are parallel to the direction indicated by arrow C. - The following describes a
pre-assembled housing 102, which could be made from plastic or metal. With reference once again to FIG. 1,housing 102 is shown to include aninput aperture 120 that receives the entireinput fiber matrix 116. In a preferred embodiment of the present invention,input end 102A ofhousing 102 is adapted to receive aninput fiber matrix 116 having twelve ribbons of twelve fibers each, although, in general,device 100 can be adapted to receive N ribbons having M(n) fibers each, where 1<=n<=N, and M(n) is the number of fibers included in ribbon n, with M(n)>=1. - To reduce the incidence of bending,
housing 102 can include aguide channel 142 that guidesfibers 110 throughinterior region 104 ofhousing 102. Preferably,guide channel 142 includes a plurality ofchannels 144 that extend throughhousing 102. Eachchannel 144 is sized and shaped to accommodate either adiscrete cable 112 or aribbon 114 of fibers. - Each
optical fiber 110 is coated with a respectivesecond coating 110″ disposed along a second, or output,portion 110B thereof. An individualoptical fiber 110 can be coated along itsoutput portion 110B to form anoutput cable 122, or a set ofoptical fibers 110 can be arrayed and coated together along their respective output portions to form anoutput ribbon 124.Device 100 can include any number ofoutput cables 122 oroutput ribbons 124, or any combination ofoutput cables 122 andoutput ribbons 124, although the total number ofoptical fibers 110 that extend throughoutput end 102B ofhousing 102 should equal the number. ofoptical fibers 110 that extend throughinput end 102A ofhousing 102. That is, optical fibers are neither created nor destroyed withindevice 100, they are merely separated (if they are part of an input ribbon) and regrouped (to form an output ribbon) as will be described below. Thus, in general,device 100 can be used to transform N ribbons having M(n) fibers, into X ribbons having Y(x) fibers, where 1<=x<=X, and Y(x) is the number of fibers included in ribbon x, with Y(x)>=1. - Although any or all of the input ribbons can extend through
housing 102 and emerge fromoutput end 102B in the same configuration (i.e., the same fibers are grouped together on output as on input),device 100 can be used to separate the array of fibers that form aninput ribbon 114, and then regroup and re-ribbonize a second array of fibers, on the output side of the device, to form anoutput ribbon 124. FIGS. 3A and 3B provide cross sectional views of an unrotatedoutput fiber matrix 118 before and after re-ribbonization. Note that, in FIG. 3A,output matrix 118 is oriented so thatoutput ribbons 124 are parallel to the direction indicated by arrow C, while in FIG. 3B,re-ribbonized output matrix 118′ is oriented so thatoutput ribbons 124′ are perpendicular to the direction indicated by arrow C. -
Output matrix 118 can be re-ribbonized in any manner known to those in the art, although it is preferred that the encapsulation is removed from a distal portion of each ribbon by peeling, or through the use of chemicals or heat strippers, or by any other suitable technique known in the art, to exposeoptical fibers 110. The exposed fibers are preferably encapsulated to form a plurality ofoutput ribbons 124 a-f. The ribbons, in combination, form withinchamber 140B, anoutput ribbon matrix 118′. Preferably, eachoutput ribbon 124 a-f includes onefiber 110 from eachinput ribbon 114 a-c. - Thus, it is the process of re-ribbonizing the output fiber matrix that causes the
optical fibers 110 to have afirst coating 110′ disposed alongfirst portion 110A thereof and asecond coating 110″ disposed alongsecond portion 110B thereof. As shown in FIG. 1, arespective encapsulation discontinuity 130 is formed on eachoptical fiber 110 whereoptical fiber 110 has no coating (i.e., the between its first, or input, coating 110′, and its second, or output, coating 110″). Preferably, all therespective encapsulation discontinuities 130 are formed in the same general area, orregion 132, withinhousing 102. - To further reduce the incidence of bending, fiber separation and
regrouping device 100 can also include one or more optional strain relief elements.Device 100 can include a singlestrain relief element 134 that surrounds all thefibers 110 inregion 132 at the output end ofhousing 102. Preferably,strain relief element 134 is a small, plastic tube that contains a plurality of fibers (preferably, all of them) to keep them from bending inregion 132. Alternatively, or additionally,device 100 can include one or more individualstrain relief elements 136 that surround therespective discontinuities 130 of individualoptical fibers 110 or where theribbons 114 have been separated intodiscrete cables 112 at the input end ofhousing 102. Preferably, eachstrain relief element 136 is a small, plastic tube that contains an individualoptical fiber 110 to keep it from bending at itsencapsulation discontinuity 130. - To still further reduce bending, the input and output fiber matrixes can be potted (e.g., epoxied) to
housing 102. To accomplish this,housing 102 can include aninput potting chamber 140A for pottinginput cables 112 andinput ribbons 114. Similarly,housing 102 can include anoutput potting chamber 140B for potting output cables and ribbons. Thepotting chambers relief elements device 100 can serve to enclose the fibers, without the need for any additional housing. As shown in FIG. 3B,output ribbons 124′ are oriented in the same direction asinput ribbons 112 a-c (see FIG. 2). Although it, it should be understood that, in general,output ribbons 124′ can be oriented in any direction relative to inputribbons 112, it is preferred, for routing purposes, thatoutput ribbons 124′ are in the same orientation asinput ribbons 112, that is, generally parallel to the direction of arrow C. To accomplish this, a device according to the present invention can be used to rotate the ribbon matrix as it extends though the housing so that, after re-ribbonization, the output ribbons are oriented in the same direction as the input ribbons. -
Device 100 can also include one or more mountingmembers 146 that extend fromhousing 102. Mountingmembers 146 can be used to mountdevice 100 to one or more substrates, such as printed circuit boards (PCBs). - It is known that the optical fibers are prone to both macrobending and microbending at their
respective encapsulation discontinuities 130. In an alternative embodiment to the pre-assembled housing,housing 102 could be molded over the optical fibers atregion 132 to contain the fibers and reduce the incidence of bending inregion 132. In this embodiment,housing 102 can be made of a polymer, such as plastic, and is molded over the optical fibers. - In another embodiment, shown in FIG. 4,
housing 102′ could be a generally tubular structure with open ends and an open interior. Once thefibers 110 are passed therethrough,housing 102′ could then be potted with known materials, such as epoxy. The epoxy fills the remainder of the open interior of the housing not occupied by the fibers. The epoxy retains the fibers in position and provides strain relief. - FIG. 5 shows a cross-section of a
device 200 for separating and regrouping optical fibers that includestwisted guide channels 144.Device 200 is similar todevice 100, except thatchannels 144 are twisted. As the input fiber matrix extends throughhousing 102, the fiber matrix is rotated from a first orientation at input end 102A (as shown in FIG. 2) into a second orientation atoutput end 102B (as shown in FIG. 6A) because of the twists.Output fiber matrix 118 can now be “re-ribbonized,” as described above, to form a rotated reribbonizedoutput fiber matrix 118″, a cross sectional view of which is depicted in FIG. 6B. Note thatoutput ribbons 124″a-f are once again parallel to the direction given by arrow C. - Although the output fiber matrix can, in general, have any orientation relative to the orientation of the input fiber matrix, (i.e.,
guide channel 144 can be twisted to rotate the fiber matrix any number of degrees), it is preferred thatguide channel 144 is twisted to rotate the fiber matrix approximately 90 degrees so that the output ribbons after re-ribbonization can be made parallel to the input ribbons. This helps to reduce the overall size of the device. - A fiber device according to the present invention can be sized for any application, although it is usually desirable that the device be as small as possible, especially for applications where available space is limited. For example, in a preferred embodiment,
device 100 can be about 50 mm long and have a cross section of about 10 mm×10 mm. - While the present invention has been described in connection with the preferred embodiments of the various figures, it is to be understood that other similar embodiments may be used or modifications and additions may be made to the described embodiment for performing the same function of the present invention without deviating therefrom. Therefore, the present invention should not be limited to any single embodiment, but rather construed in breadth and scope in accordance with the recitation of the appended claims.
Claims (20)
1. A fiber separation and regrouping device, comprising:
a housing having an input end, an output end, and an interior region extending between the input end and the output end thereof; and
a plurality of optical fibers extending through the interior region of the housing, each said optical fiber having a respective first coating disposed along a first portion thereof and a respective second coating disposed along a second portion thereof, wherein a respective encapsulation discontinuity is formed on each said optical fiber between the respective first coating and the respective second coating,
wherein the housing is molded over the optical fibers to contain the optical fibers and surround the respective encapsulation discontinuities.
2. The device of claim 1 , further comprising:
at least one strain relief element within the interior region of the housing that contains at least one of the optical fibers and surrounds the respective encapsulation discontinuity of the at least one optical fiber.
3. The device of claim 2 , wherein the strain relief element contains the plurality of fibers and surrounds the respective encapsulation discontinuities.
4. The device of claim 1 , further comprising a plurality of strain relief elements within the interior region of the housing, each said strain relief element containing one of the optical fibers and surrounding the respective encapsulation discontinuity thereof.
5. The device of claim 1 , wherein the housing comprises an input potting chamber proximate the input end thereof in which the optical fibers are potted to the housing.
6. The device of claim 5 , wherein the housing comprises an output potting chamber proximate the output end thereof in which the optical fibers are potted to the housing.
7. The device of claim 1 , wherein the input end of the housing includes plurality of input apertures through which optical fibers extend into the interior region thereof.
8. The device of claim 1 , wherein at least a subset of the plurality of optical fibers form an input fiber optic ribbon extending through the input end of the housing.
9. The device of claim 1 , wherein at least a subset of the plurality of optical fibers form an output fiber optic ribbon extending through the output end of the housing.
10. The device of claim 1 , wherein the interior region of the housing includes a guide channel that channels the optical fibers through the interior region of the housing.
11. The device of claim 1 , wherein the interior region of the housing includes a twisted guide channel that rotates the optical fibers as they extend through the housing.
12. A method of organizing conductive elements, comprising the steps of:
providing a plurality of conductive elements arranged in first groups;
separating said first groups into individual conductive elements;
rearranging said individual conductive elements into second groups; and
extending said conductive elements through a shuffle device.
13. The method as recited in claim 12 , wherein said first groups comprise ribbons, and said separating step comprises unribbonizing said first groups.
14. The method as recited in claim 13 , further comprising the step of placing said second group in ribbons.
15. The method as recited in claim 12 , wherein the rearranging step produces second groups different from said first groups.
16. A method of managing a plurality of conductive elements, comprising the steps of:
arranging a first section of said conductive elements in a first arrangement;
arranging a second section of said conductive elements in a second arrangement; and
enclosing a third section of said conductive elements located between said first and second sections.
17. The method as recited in claim 16 , wherein the enclosing step comprises inserting said conductive elements in a pre-assembled shuffle device.
18. The method as recited in claim 16 , wherein the enclosing step comprises encapsulating said conductive elements.
19. The method as recited in claim 18 , wherein the encapsulating step comprises overmolding a housing over said third section.
20. The method as recited in claim 18 , wherein the encapsulating step comprises the steps of:
placing said third section in a tubular structure; and
potting said third section within said tubular structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/309,715 US20030118313A1 (en) | 2000-08-15 | 2002-12-04 | Optical fiber separation and regrouping device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/638,768 US6594437B1 (en) | 2000-08-15 | 2000-08-15 | Optical fiber separation and regrouping device |
US10/309,715 US20030118313A1 (en) | 2000-08-15 | 2002-12-04 | Optical fiber separation and regrouping device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/638,768 Division US6594437B1 (en) | 2000-08-15 | 2000-08-15 | Optical fiber separation and regrouping device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030118313A1 true US20030118313A1 (en) | 2003-06-26 |
Family
ID=24561335
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/638,768 Expired - Lifetime US6594437B1 (en) | 2000-08-15 | 2000-08-15 | Optical fiber separation and regrouping device |
US10/309,715 Abandoned US20030118313A1 (en) | 2000-08-15 | 2002-12-04 | Optical fiber separation and regrouping device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/638,768 Expired - Lifetime US6594437B1 (en) | 2000-08-15 | 2000-08-15 | Optical fiber separation and regrouping device |
Country Status (8)
Country | Link |
---|---|
US (2) | US6594437B1 (en) |
EP (1) | EP1182484B1 (en) |
JP (1) | JP2002098841A (en) |
KR (1) | KR20020013804A (en) |
AT (1) | ATE347703T1 (en) |
CA (1) | CA2353508A1 (en) |
DE (1) | DE60124994T2 (en) |
MX (1) | MXPA01007997A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006044080A1 (en) * | 2004-10-13 | 2006-04-27 | Corning Cable Systems Llc | Pre-connectorized fiber optic distribution cable having multifiber connector |
WO2014143822A1 (en) * | 2013-03-15 | 2014-09-18 | Plexxi Inc. | System and method for data center optical connection |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6960030B2 (en) * | 2002-06-05 | 2005-11-01 | The Furukawa Electric Co., Ltd. | Optical connector boot with controlled rotation feature |
US7125494B2 (en) * | 2004-06-02 | 2006-10-24 | Illinois Tool Works, Inc. | Method of removing matrix from fiber optic cable |
US7303069B2 (en) * | 2005-05-25 | 2007-12-04 | Illinois Tool Works, Inc. | Pre-moistened fiber optic component cleaning tool with integrated platen |
KR100720527B1 (en) | 2005-12-28 | 2007-05-22 | 동부일렉트로닉스 주식회사 | Cmos image sensor and method for fabricating the same |
US7590321B2 (en) * | 2006-03-09 | 2009-09-15 | Adc Telecommunications, Inc. | Mid-span breakout with helical fiber routing |
DE102008061700B3 (en) * | 2008-12-11 | 2010-02-18 | Jt Optical Engine Gmbh + Co. Kg | Fiber stripping method, involves dipping fiber bundle into chemical solvent upto ingates of fibers for preset time period to pre-weaken of connection between shells and cores of fibers, and removing pre-weakened shell sections from cores |
JP2017187678A (en) * | 2016-04-07 | 2017-10-12 | 住友電気工業株式会社 | Optical wiring member |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4026693A (en) * | 1974-02-16 | 1977-05-31 | Olympus Optical Co., Ltd. | Method for producing an image dissector |
US4185888A (en) * | 1962-09-21 | 1980-01-29 | Quelle Fred W Jr | Cryptographic system employing optical scrambling arrays |
US4824194A (en) * | 1987-03-25 | 1989-04-25 | Fuji Photo Film Co., Ltd. | Light guide apparatus formed from strip light guides |
US4932747A (en) * | 1989-09-07 | 1990-06-12 | The United States Of America As Represented By The Secretary Of The Navy | Fiber bundle homogenizer and method utilizing same |
US4943136A (en) * | 1988-12-09 | 1990-07-24 | The Boeing Company | Optical backplane interconnection |
US4952022A (en) * | 1989-03-02 | 1990-08-28 | Xerox Corporation | Fiber optic line illuminator with deformed end fibers and method of making same |
US5136674A (en) * | 1990-04-17 | 1992-08-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Light admitting device |
US5335306A (en) * | 1991-04-04 | 1994-08-02 | Shin-Etsu Chemical Co., Ltd. | Ultraviolet resistant silica glass fiber |
US5394503A (en) * | 1993-10-08 | 1995-02-28 | Data Switch Corporation | Optical fiber connection monitoring apparatus, patch panel control system and method of using same |
US5715345A (en) * | 1995-02-27 | 1998-02-03 | Hughes Danbury Optical Systems, Inc. | Optical beam regeneration by optical fiber remapping |
US5857051A (en) * | 1997-04-21 | 1999-01-05 | Lucent Technologies Inc. | High density riser and plenum breakout cables for indoor and outdoor cable applications |
US5862285A (en) * | 1995-08-04 | 1999-01-19 | Ceramoptec Industries, Inc. | Multichannel optical fiber bundle with ordered structure in its sensitive probe tip |
US6017154A (en) * | 1998-02-05 | 2000-01-25 | Lucent Technologies, Inc. | Optical fiber connector with cable anchoring means |
US6243520B1 (en) * | 1999-08-16 | 2001-06-05 | Schott Fiber Optics, Inc. | Optical fiber bundle having an aligned optical fiber array and method of fabricating the same |
US6567603B1 (en) * | 1998-03-12 | 2003-05-20 | Tomoegawa Paper Co., Ltd. | Optical interconnection apparatus and process for fabrication of the same |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3883222A (en) | 1973-09-07 | 1975-05-13 | Corning Glass Works | Coupler for optical communication system |
JPS5988710A (en) * | 1982-11-15 | 1984-05-22 | Hitachi Ltd | Plastic multicore optical connector |
FR2537808A1 (en) | 1982-12-08 | 1984-06-15 | Instruments Sa | OPTICAL COMPONENT WITH SHARED FUNCTION FOR OPTICAL TELETRANSMISSIONS |
FR2547150A1 (en) | 1983-05-31 | 1984-12-07 | Cit Alcatel | OPTO-MECHANICAL SWITCH AND SPATIAL SWITCHING ASSEMBLY IMPLEMENTING THE SAME |
FR2547071B1 (en) | 1983-05-31 | 1986-02-14 | Cit Alcatel | OPTO-ELECTRONIC SPACE SWITCHING DEVICE |
EP0229177B1 (en) * | 1985-06-24 | 1992-09-09 | AT&T Corp. | Optical shuffle arrangement |
KR910004713B1 (en) * | 1987-02-06 | 1991-07-10 | 스미도모덴기 고오교오 가부시기가이샤 | Apparatus for arranging a plurality of coated optical fiber |
JP2718013B2 (en) | 1989-01-12 | 1998-02-25 | 住友電気工業株式会社 | Optical fiber wiring equipment |
US5009477A (en) | 1989-05-12 | 1991-04-23 | At&T Bell Laboratories | Optical interconnect arrangement |
US4995692A (en) | 1990-02-06 | 1991-02-26 | General Motors Corporation | Fiber optic star coupler |
US5155785A (en) | 1991-05-01 | 1992-10-13 | At&T Bell Laboratories | Optical fiber interconnection apparatus and method |
US5185840A (en) * | 1991-05-06 | 1993-02-09 | Computer Crafts, Inc. | Branching method for a multi-fiber fiberoptic cable |
US5309538A (en) * | 1991-09-06 | 1994-05-03 | Minnesota Mining And Manufacturing Company | Reinforced multiple optical fiber splice having preanodized element |
US5239609A (en) | 1992-03-03 | 1993-08-24 | Porta Systems Corp. | Means for routing buffer tube type fiber optical cable |
US5303373A (en) | 1992-10-16 | 1994-04-12 | Schott Fiber Optics, Inc. | Anamorphic fused fiber optic bundle |
JPH0792342A (en) * | 1993-07-29 | 1995-04-07 | Sumitomo Electric Ind Ltd | Optical waveguide module |
JPH07198968A (en) * | 1993-12-28 | 1995-08-01 | Furukawa Electric Co Ltd:The | Terminal structure of parallel coated fibers of multiple optical fiber cable |
JPH07230021A (en) * | 1994-02-17 | 1995-08-29 | Nippon Telegr & Teleph Corp <Ntt> | Pitch conversion multi-unit ribbon of optical fibers and its manufacture |
US5500917A (en) * | 1994-04-18 | 1996-03-19 | Gould Electronics Inc. | Optical assembly/housing for securing optical fiber components, devices and fibers to the same or to mounting fixtures |
DE4422362B4 (en) * | 1994-06-27 | 2006-11-16 | CCS Technology, Inc., Wilmington | Method for producing a splice connection between at least two optical waveguides |
US5604830A (en) * | 1994-12-22 | 1997-02-18 | Hoechst Celanese Corp. | Multiple fiber connector for injection molded multiple fiberoptic coupler unit and cladding for same |
SE504587C2 (en) * | 1995-10-09 | 1997-03-10 | Ericsson Telefon Ab L M | Fanout device and method of manufacture thereof |
JP3450104B2 (en) * | 1995-11-13 | 2003-09-22 | 古河電気工業株式会社 | Optical coupler |
FR2743424B1 (en) | 1996-01-09 | 1998-03-27 | Instruments Sa | WAVELENGTH ROUTER N X N, OPTICAL ROUTING PROCESS AND ASSOCIATED COMMUNICATIONS NETWORK |
JP3497510B2 (en) * | 1996-01-26 | 2004-02-16 | 住友電気工業株式会社 | Optical waveguide module |
JP2000512102A (en) | 1996-06-14 | 2000-09-12 | アクゾ ノーベル ナムローゼ フェンノートシャップ | Optical switch matrix |
US5943455A (en) | 1997-04-18 | 1999-08-24 | Lucent Technologies Inc. | Method and apparatus for interfacing optical fibers from optical fiber ribbons and cables with an optical integrated circuit |
US5915055A (en) * | 1997-06-30 | 1999-06-22 | Siecor Corporation | Method and apparatus for connectorizing fiber optic cable |
SE510068C2 (en) | 1997-08-22 | 1999-04-12 | Ericsson Telefon Ab L M | Component for cross-coupling of optical fibers |
US6222976B1 (en) * | 1999-06-30 | 2001-04-24 | Lucent Technologies Inc. | Optical harness and cross-connect method |
-
2000
- 2000-08-15 US US09/638,768 patent/US6594437B1/en not_active Expired - Lifetime
-
2001
- 2001-07-16 CA CA002353508A patent/CA2353508A1/en not_active Abandoned
- 2001-07-27 EP EP01117722A patent/EP1182484B1/en not_active Expired - Lifetime
- 2001-07-27 DE DE60124994T patent/DE60124994T2/en not_active Expired - Lifetime
- 2001-07-27 AT AT01117722T patent/ATE347703T1/en not_active IP Right Cessation
- 2001-08-03 JP JP2001236274A patent/JP2002098841A/en active Pending
- 2001-08-08 MX MXPA01007997A patent/MXPA01007997A/en active IP Right Grant
- 2001-08-14 KR KR1020010048888A patent/KR20020013804A/en not_active Application Discontinuation
-
2002
- 2002-12-04 US US10/309,715 patent/US20030118313A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4185888A (en) * | 1962-09-21 | 1980-01-29 | Quelle Fred W Jr | Cryptographic system employing optical scrambling arrays |
US4026693A (en) * | 1974-02-16 | 1977-05-31 | Olympus Optical Co., Ltd. | Method for producing an image dissector |
US4824194A (en) * | 1987-03-25 | 1989-04-25 | Fuji Photo Film Co., Ltd. | Light guide apparatus formed from strip light guides |
US4943136A (en) * | 1988-12-09 | 1990-07-24 | The Boeing Company | Optical backplane interconnection |
US4952022A (en) * | 1989-03-02 | 1990-08-28 | Xerox Corporation | Fiber optic line illuminator with deformed end fibers and method of making same |
US4932747A (en) * | 1989-09-07 | 1990-06-12 | The United States Of America As Represented By The Secretary Of The Navy | Fiber bundle homogenizer and method utilizing same |
US5136674A (en) * | 1990-04-17 | 1992-08-04 | Asahi Kogaku Kogyo Kabushiki Kaisha | Light admitting device |
US5335306A (en) * | 1991-04-04 | 1994-08-02 | Shin-Etsu Chemical Co., Ltd. | Ultraviolet resistant silica glass fiber |
US5394503A (en) * | 1993-10-08 | 1995-02-28 | Data Switch Corporation | Optical fiber connection monitoring apparatus, patch panel control system and method of using same |
US5715345A (en) * | 1995-02-27 | 1998-02-03 | Hughes Danbury Optical Systems, Inc. | Optical beam regeneration by optical fiber remapping |
US5862285A (en) * | 1995-08-04 | 1999-01-19 | Ceramoptec Industries, Inc. | Multichannel optical fiber bundle with ordered structure in its sensitive probe tip |
US5857051A (en) * | 1997-04-21 | 1999-01-05 | Lucent Technologies Inc. | High density riser and plenum breakout cables for indoor and outdoor cable applications |
US6017154A (en) * | 1998-02-05 | 2000-01-25 | Lucent Technologies, Inc. | Optical fiber connector with cable anchoring means |
US6567603B1 (en) * | 1998-03-12 | 2003-05-20 | Tomoegawa Paper Co., Ltd. | Optical interconnection apparatus and process for fabrication of the same |
US6243520B1 (en) * | 1999-08-16 | 2001-06-05 | Schott Fiber Optics, Inc. | Optical fiber bundle having an aligned optical fiber array and method of fabricating the same |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7088893B2 (en) | 2003-11-26 | 2006-08-08 | Corning Cable Systems Llc | Pre-connectorized fiber optic distribution cable having multifiber connector |
WO2006044080A1 (en) * | 2004-10-13 | 2006-04-27 | Corning Cable Systems Llc | Pre-connectorized fiber optic distribution cable having multifiber connector |
WO2014143822A1 (en) * | 2013-03-15 | 2014-09-18 | Plexxi Inc. | System and method for data center optical connection |
US9325604B2 (en) | 2013-03-15 | 2016-04-26 | Plexxi Inc. | System and method for data center optical connection |
Also Published As
Publication number | Publication date |
---|---|
EP1182484A2 (en) | 2002-02-27 |
CA2353508A1 (en) | 2002-02-15 |
KR20020013804A (en) | 2002-02-21 |
MXPA01007997A (en) | 2003-09-10 |
DE60124994D1 (en) | 2007-01-18 |
ATE347703T1 (en) | 2006-12-15 |
JP2002098841A (en) | 2002-04-05 |
US6594437B1 (en) | 2003-07-15 |
EP1182484A3 (en) | 2004-06-09 |
EP1182484B1 (en) | 2006-12-06 |
DE60124994T2 (en) | 2007-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR0159087B1 (en) | Bonded array of transmission media | |
EP1203254B1 (en) | Optical fibre cable with single strength member unit in cable outer jacket | |
US6519399B2 (en) | Fiber optic cable with profiled group of optical fibers | |
US5966489A (en) | Fiber optic ribbon interconnect cable | |
US5268983A (en) | Round, dry, all dielectric, fan out compact optical fiber cable | |
US6873773B2 (en) | Method of cross-connecting optical fibers | |
EP0953857B1 (en) | Optical Fiber | |
US6594437B1 (en) | Optical fiber separation and regrouping device | |
US4964691A (en) | Optical fiber cable having optical fibers with various lengths | |
US20220252816A1 (en) | High density bundled optical fiber cable with preconnectorized drop points | |
EP1220237B1 (en) | Cable assembly having ripcords with excess length and ripcords attached to tape | |
EP1180708A2 (en) | A rotation device for reorienting an optical fiber ribbon matrix | |
JPH01137208A (en) | Tape-shaped optical fiber | |
US20020041745A1 (en) | Method for the manufacture of a fiber package incorporating therein dispersion compensating gratings | |
JP2000249881A (en) | Structure of optical fiber cable | |
JP2002258122A (en) | Ribbon optical fiber cord with optical fiber array | |
JP2001281509A (en) | Branching part of multi-core optical tape fiber core | |
JPH08211265A (en) | Optical fiber cable | |
JPH11326720A (en) | Connection type coated fiber ribbon | |
JPH08171028A (en) | Optical waveguide module | |
JPH10115736A (en) | Single core coated optical fiber | |
JP2000249880A (en) | Structure of optical fiber cable |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BERG TECHNOLOGY, INC., NEVADA Free format text: CHANGE OF NAME;ASSIGNOR:NICOLAS, ARNAUD;REEL/FRAME:013760/0630 Effective date: 20000913 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |