CA2629319A1 - Single aperture multiple optical waveguide transceiver - Google Patents

Single aperture multiple optical waveguide transceiver Download PDF

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Publication number
CA2629319A1
CA2629319A1 CA002629319A CA2629319A CA2629319A1 CA 2629319 A1 CA2629319 A1 CA 2629319A1 CA 002629319 A CA002629319 A CA 002629319A CA 2629319 A CA2629319 A CA 2629319A CA 2629319 A1 CA2629319 A1 CA 2629319A1
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CA
Canada
Prior art keywords
fiber optic
transceiver
light
detector
aperture
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.)
Granted
Application number
CA002629319A
Other languages
French (fr)
Other versions
CA2629319C (en
Inventor
Lance Richard Leclair
Priyavadan Mamidipudi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optical Air Data Systems LLC
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CA2753398A priority Critical patent/CA2753398A1/en
Publication of CA2629319A1 publication Critical patent/CA2629319A1/en
Application granted granted Critical
Publication of CA2629319C publication Critical patent/CA2629319C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4812—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver transmitted and received beams following a coaxial path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4246—Bidirectionally operating package structures
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
    • G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
    • G02B6/3652—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.

Abstract

A single-aperture, multi-axial transceiver is provided that is particularly useful in a LIDAR system for detecting low velocities at increased ranges. The system is particularly useful in systems that are required to measure very low velocities and very short distances as well as to provide an operating range of hundreds of meters. The transceiver uses closely spaced waveguides placed near the focal point of a single objective 8 to form input and detector apertures. Preferably the input and detector apertures are spaced from each other by less than about 80~m. In an embodiment using light with a wavelength of 1550nm, the spacing is preferably about 30~m.

Claims (8)

1. A transceiver comprising an objective, a light source element forming a source aperture placed near the focal point of said objective such that said objective forms said light into an illumination beam, a detector element placed near said source of light to form a detector aperture to receive light reflected from a target, wherein said source aperture and said detector aperture are spaced from each other by a distance of less than about twenty times the wavelength of said light.
2. A transceiver according to claim 1 wherein said distance is about 80µm.
3. A transceiver according to claim 1 wherein said light source element comprises a first fiber optic element coupled to a laser and said detector comprises a second fiber optic element coupled to a detecting element.
4. A transceiver according to claim 3 wherein respective ends of said first and said second fiber optic elements are held in grooves in a plate and have diameters of less than said distance.
5. A transceiver according to claim 3 wherein respective ends of said first and said second fiber optic elements are formed by a tapered fiber bundle.
6. A transceiver according to claim 3 wherein respective ends of said first and said second fiber optic elements are formed by a planar waveguide.
7. A method of manufacturing a fiber optic element for a transceiver comprising the step of securing a fiber optic element in a groove in a plate, reducing the diameter of said fiber optic element by polishing, machining, or etching the cladding of said fiber optic element.
8. A method of measuring very low velocities at short distances by using the transceiver of claim 1.
CA2629319A 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver Active CA2629319C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2753398A CA2753398A1 (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US73516405P 2005-11-10 2005-11-10
US60/735,164 2005-11-10
PCT/US2006/043928 WO2007084209A2 (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2753398A Division CA2753398A1 (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver

Publications (2)

Publication Number Publication Date
CA2629319A1 true CA2629319A1 (en) 2007-07-26
CA2629319C CA2629319C (en) 2012-01-03

Family

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Family Applications (2)

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CA2753398A Abandoned CA2753398A1 (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver
CA2629319A Active CA2629319C (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2753398A Abandoned CA2753398A1 (en) 2005-11-10 2006-11-13 Single aperture multiple optical waveguide transceiver

Country Status (6)

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US (2) US8190030B2 (en)
EP (1) EP1949154B1 (en)
JP (1) JP5478888B2 (en)
AU (1) AU2006336215B2 (en)
CA (2) CA2753398A1 (en)
WO (1) WO2007084209A2 (en)

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US11953601B2 (en) 2021-11-22 2024-04-09 Seyond, Inc. Multiwavelength lidar design

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US20090142066A1 (en) 2009-06-04
CA2753398A1 (en) 2007-07-26
CA2629319C (en) 2012-01-03
EP1949154A4 (en) 2012-11-14
US20120227263A1 (en) 2012-09-13
AU2006336215A1 (en) 2007-07-26
WO2007084209A3 (en) 2007-11-29
AU2006336215B2 (en) 2010-11-11
JP2009516215A (en) 2009-04-16
EP1949154B1 (en) 2016-08-10
US8190030B2 (en) 2012-05-29
JP5478888B2 (en) 2014-04-23
EP1949154A2 (en) 2008-07-30

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