CA2369754A1 - A highly scalable modular optical amplifier based subsystem - Google Patents
A highly scalable modular optical amplifier based subsystem Download PDFInfo
- Publication number
- CA2369754A1 CA2369754A1 CA002369754A CA2369754A CA2369754A1 CA 2369754 A1 CA2369754 A1 CA 2369754A1 CA 002369754 A CA002369754 A CA 002369754A CA 2369754 A CA2369754 A CA 2369754A CA 2369754 A1 CA2369754 A1 CA 2369754A1
- Authority
- CA
- Canada
- Prior art keywords
- optical
- building block
- osc
- output
- optical amplifier
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0221—Power control, e.g. to keep the total optical power constant
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
- H04B10/296—Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/297—Bidirectional amplification
- H04B10/2972—Each direction being amplified separately
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/298—Two-way repeaters, i.e. repeaters amplifying separate upward and downward lines
Abstract
A modular bidirectional optical amplification system includes a multiwavelength dual amplifier building block, a multiwavelength unidirectional booster amplifier BB, a unidirectional and a bidirectional Optical Service Channel (OSC) BB, an Intelligent Optical Terminal Accessway (IOTA) module, and an interleaved filter BB. The dual amplifier BB is available in a C-band version, an E-band version and a hybrid version, and provides unidirectional or bidirectional multichannel amplification. The booster amplifier is available in a C-band version, an E-band version and in a booster plus variant; one for the C-band and one for E-band. The unidirectional and bidirectional OSC BBs provide a means for OAM & P functionality to the optical network. The IOTA BB provides multiplexing and demultiplexing, and the filter BB provides separation of the signal into gri d- 1 and grid-2 channels.
Claims (31)
1. A dual optical amplifier building block comprising:
a first and a second optical amplifier (OA), for amplifying a first and a second optical signal, respectively;
a first input WDM coupler connected at the input of said first OA for separating a first optical service channel (OSC) from said first optical signal;
a first output WDM coupler connected at the output of said first OA
for adding said first OSC to said first optical signal;
a second input WDM coupler connected at the input of said second OA for separating a second OSC from said second optical signal;
a second output WDM coupler connected at the output of said second OA for adding said second OSC to said second optical signal;
a first line-in and a first line-out connector for coupling said first optical signal over a first transmission line;
a second line-in and a second line-out connector for coupling said second optical signal over a second transmission line;
a first drop-OSC and a first add-OSC connector for coupling said first OSC to said respective first input and output WDM coupler; and a second drop-OSC and a second add-OSC connector for coupling said second OSC to said respective second input and output WDM
coupler.
a first and a second optical amplifier (OA), for amplifying a first and a second optical signal, respectively;
a first input WDM coupler connected at the input of said first OA for separating a first optical service channel (OSC) from said first optical signal;
a first output WDM coupler connected at the output of said first OA
for adding said first OSC to said first optical signal;
a second input WDM coupler connected at the input of said second OA for separating a second OSC from said second optical signal;
a second output WDM coupler connected at the output of said second OA for adding said second OSC to said second optical signal;
a first line-in and a first line-out connector for coupling said first optical signal over a first transmission line;
a second line-in and a second line-out connector for coupling said second optical signal over a second transmission line;
a first drop-OSC and a first add-OSC connector for coupling said first OSC to said respective first input and output WDM coupler; and a second drop-OSC and a second add-OSC connector for coupling said second OSC to said respective second input and output WDM
coupler.
2. A dual optical amplifier building block as claimed in claim 1, further comprising a plurality of optical taps arranged at the input and output of said first and said second OA's, for diverting a forward direction fraction of said respective first and second optical signals for monitoring purposes.
3. A dual optical amplifier building block as claimed in claim 2, further comprising additional optical taps arranged at the output of said first and said second OA's, for diverting a reverse direction fraction of said respective first and second optical signals for monitoring purposes.
4. A dual optical amplifier building block as claimed in claim 1, wherein said first and said second optical signals are carried over a respective first-group and second-group channel in the conventional Erbium optical band, and said first and said second OAs are a C-version for the conventional Erbium optical band.
5. A dual optical amplifier building block as claimed in claim 1, wherein said first and said second optical signals are carried over a respective first-group and second-group channel in the extended Erbium optical band, and said first and said second OAs are an E-version for the extended Erbium optical band.
6. A dual optical amplifier building block as claimed in claim 1, wherein said first optical signal is carried over a first-group channel in the conventional Erbium optical band, said first OA is a C-version for the conventional Erbium optical band, said second optical signal is carried over a second-group channel in the extended Erbium optical band, and said second OA is an E-version for the conventional Erbium optical band.
7. A dual optical amplifier building block as claimed in claim 1, wherein said first optical signal comprises a plurality of first-group channels and said first OA comprises gain control means for transient suppression, for maintaining said first optical signal unperturbed during expected and unexpected additions of further first-group channels.
8. A dual optical amplifier building block as claimed in claim 1, wherein said second optical signal comprises a plurality of second-group channels and said second OA comprises gain control means for transient suppression, for maintaining said second optical signal unperturbed during expected and unexpected additions of further second-group channels.
9. A booster optical amplifier building block comprising:
an optical amplifier (OA) for providing a substantial increase in optical output power of an optical signal;
a WDM coupler connected at the output of said OA for adding an OSC to said optical signal;
a line-in and a line-out connector for coupling said optical signal over a transmission line; and an add-OSC connector for coupling said OSC to said WDM
coupler.
an optical amplifier (OA) for providing a substantial increase in optical output power of an optical signal;
a WDM coupler connected at the output of said OA for adding an OSC to said optical signal;
a line-in and a line-out connector for coupling said optical signal over a transmission line; and an add-OSC connector for coupling said OSC to said WDM
coupler.
10. A booster optical amplifier building block as claimed in claim 9, wherein said OA comprises a multiple pumped EDFA.
11. A booster optical amplifier building block as claimed in claim 10, wherein said OA comprises an embedded variable optical attenuator (VOA) for controlling the amplifier to operate at a flat gain.
12. A booster optical amplifier building block as claimed in claim 9, further comprising a plurality of optical taps arranged at the input and output of said OA, for diverting a forward and a reverse direction fractions of said optical signal for monitoring purposes.
13. A booster optical amplifier building block as claimed in claim 9, wherein said optical signal comprises a plurality of channels and said OA
comprises gain control means for transient suppression, for maintaining said optical signal unperturbed during expected and unexpected additions further channels.
comprises gain control means for transient suppression, for maintaining said optical signal unperturbed during expected and unexpected additions further channels.
14. A booster optical amplifier building block as claimed in claim 9, further comprising:
an optical circulator connected with a first and a second port between the output of said OA and said WDM coupler for separating a drop signal from said optical signal at a third port; and an upgrade connector for connecting said third port to a second transmission line.
an optical circulator connected with a first and a second port between the output of said OA and said WDM coupler for separating a drop signal from said optical signal at a third port; and an upgrade connector for connecting said third port to a second transmission line.
15. A booster optical amplifier building block as claimed in claim 9, wherein said optical signal is carried over a channel in the conventional Erbium optical band, and said OA is a C-version for the conventional Erbium optical band.
16. A booster optical amplifier building block as claimed in claim 9, wherein said optical signal is carried over a channel in the extended Erbium optical band, and said OA is an E-version for the extended Erbium optical band.
17. A booster optical amplifier building block as claimed in claim 9, wherein said OA provides one of a lower and a higher output power.
18. An optical service channel (OSC) building block for transmitting and receiving service information over a first and a second service channel, comprising:
a West OSC transceiver with a West receiver for said first OSC
and a East transmitter for said second OSC;
an East OSC with a West transmitter for said first OSC and a second East for the second OSC;
a first West-in and a first East-out connector for coupling said first OSC to said West receiver and said West transmitter, respectively; and a second East-in and a second West-out connector for coupling said second OSC to said East receiver and said east transmitter, respectively, for obtaining a unidirectional OSC building block.
a West OSC transceiver with a West receiver for said first OSC
and a East transmitter for said second OSC;
an East OSC with a West transmitter for said first OSC and a second East for the second OSC;
a first West-in and a first East-out connector for coupling said first OSC to said West receiver and said West transmitter, respectively; and a second East-in and a second West-out connector for coupling said second OSC to said East receiver and said east transmitter, respectively, for obtaining a unidirectional OSC building block.
19. An OSC building block as claimed in claim 18, further comprising a first WDM coupler connected between said West-in connector and said West receiver, and a second WDM coupler connected between said East-in connector and said East receiver, for obtaining a bidirectional OSC building block.
20. An optical filter family comprising:
a grid-1 filter, a first line-in and a first line-out connector for coupling said grid-1 filter over a first transmission line; and a grid-2 filter, a second line-in and a first line-out connector for coupling said grid-2 filter over a second transmission line.
a grid-1 filter, a first line-in and a first line-out connector for coupling said grid-1 filter over a first transmission line; and a grid-2 filter, a second line-in and a first line-out connector for coupling said grid-2 filter over a second transmission line.
21. A dual optical amplifier building block as claimed in claim 20, wherein said grid-1 and grid-2 filters operate in the conventional Erbium optical band.
22. A dual optical amplifier building block as claimed in claim 20, wherein said grid-1 and grid-2 filters operate in the extended Erbium optical band.
23. An intelligent optical terminal accessway (IOTA) family comprising an optical multiplexer building block (BB), a plurality of line-in optical connectors for connecting a plurality of input transmission lines to the inputs of said optical multiplexer BB, and a line-out optical connector for connecting the output of said optical multiplexer BB to an output transmission line.
24. An IOTA family as claimed in claim 23, comprising:
a plurality of VOA's, each associated with an input transmission line, each for adjusting the gain of a respective input optical signal; and a plurality of optical taps, at each input of said optical multiplexer BB and at the output of said optical multiplexer BB, for diverting a fraction of each respective input and output optical signals.
a plurality of VOA's, each associated with an input transmission line, each for adjusting the gain of a respective input optical signal; and a plurality of optical taps, at each input of said optical multiplexer BB and at the output of said optical multiplexer BB, for diverting a fraction of each respective input and output optical signals.
25. An IOTA family as claimed in claim 24 comprising a controller for receiving said fractions, determining the input power of each said input
26 optical signals and said output optical signal and accordingly adjusting the VOAs.
26. An IOTA family as claimed in claim 23, comprising an optical demultiplexer BB, a line-in optical connector for connecting the input of said demultiplexer to a transmission line, and a plurality of line-out optical connectors for connecting the outputs of said demultiplexer to a plurality of output transmission lines.
26. An IOTA family as claimed in claim 23, comprising an optical demultiplexer BB, a line-in optical connector for connecting the input of said demultiplexer to a transmission line, and a plurality of line-out optical connectors for connecting the outputs of said demultiplexer to a plurality of output transmission lines.
27. An optical amplification system comprising:
a dual optical amplifier building block for bidirectional line amplification of a plurality of optical channels propagating along a first and a second transmission line; and an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over a first and a second service channel.
a dual optical amplifier building block for bidirectional line amplification of a plurality of optical channels propagating along a first and a second transmission line; and an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over a first and a second service channel.
28. A system as claimed in claim 27, further comprising a first booster optical amplifier building block connected on said first transmission line at a first output of said dual optical amplifier building block, and a second booster optical amplifier building block connected on said second transmission line at a second output of said dual optical amplifier building block.
29. A system as claimed in claim 27, further comprising a first dispersion compensation module connected between said first output and said first booster optical amplifier building block, and a second dispersion compensation module connected between said second output and said second booster optical amplifier building block.
30. An optical amplification system comprising:
a dual optical amplifier building block for bidirectional line amplification of a plurality of optical channels propagating along a first and a second transmission line;
an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over a first and a second service channel;
a first booster optical amplifier building block connected on said first transmission line at a first output of said dual optical amplifier building block;
a second booster optical amplifier building block connected on said second transmission line at a second output of said dual optical amplifier building block;
a grid-1 filter, connected between said first output and said first booster optical amplifier building block; and a grid-2 filter, connected between said second output and said second booster optical amplifier building block.
a dual optical amplifier building block for bidirectional line amplification of a plurality of optical channels propagating along a first and a second transmission line;
an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over a first and a second service channel;
a first booster optical amplifier building block connected on said first transmission line at a first output of said dual optical amplifier building block;
a second booster optical amplifier building block connected on said second transmission line at a second output of said dual optical amplifier building block;
a grid-1 filter, connected between said first output and said first booster optical amplifier building block; and a grid-2 filter, connected between said second output and said second booster optical amplifier building block.
31. An optical amplification system comprising:
an optical multiplexer for multiplexing a plurality of optical signals received over a plurality of input transmission lines and providing a forward multichannel optical signal;
a dual optical amplifier building block for amplifying said forward multichannel optical signal and amplifying a reverse multichannel optical signal;
an optical demultiplexer for receiving said reverse multichannel optical signal and separating same into a plurality of optical channels for transmission over a plurality of transmission lines;
an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over an optical service channel.
an optical multiplexer for multiplexing a plurality of optical signals received over a plurality of input transmission lines and providing a forward multichannel optical signal;
a dual optical amplifier building block for amplifying said forward multichannel optical signal and amplifying a reverse multichannel optical signal;
an optical demultiplexer for receiving said reverse multichannel optical signal and separating same into a plurality of optical channels for transmission over a plurality of transmission lines;
an OSC building block operatively connected to said dual optical amplifier building block for transmitting and receiving service information over an optical service channel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/292,340 | 1999-04-15 | ||
| US09/292,340 US6236499B1 (en) | 1999-04-15 | 1999-04-15 | Highly scalable modular optical amplifier based subsystem |
| PCT/CA2000/000121 WO2000064079A1 (en) | 1999-04-15 | 2000-02-10 | A highly scalable modular optical amplifier based subsystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2369754A1 true CA2369754A1 (en) | 2000-10-26 |
| CA2369754C CA2369754C (en) | 2011-08-16 |
Family
ID=23124231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2369754A Expired - Lifetime CA2369754C (en) | 1999-04-15 | 2000-02-10 | A highly scalable modular optical amplifier based subsystem |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6236499B1 (en) |
| EP (1) | EP1183801B1 (en) |
| AT (1) | ATE332596T1 (en) |
| AU (1) | AU2529300A (en) |
| CA (1) | CA2369754C (en) |
| DE (1) | DE60029220T2 (en) |
| WO (1) | WO2000064079A1 (en) |
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| US5228105A (en) * | 1987-05-04 | 1993-07-13 | Glista Andrew S | Programmable electro-optic packaging and interconnect system |
| US5083874A (en) * | 1989-04-14 | 1992-01-28 | Nippon Telegraph And Telephone Corporation | Optical repeater and optical network using the same |
| IT1238032B (en) | 1990-01-30 | 1993-06-23 | Pirelli Cavi Spa | FIBER OPTIC TELECOMMUNICATION LINE WITH SEPARATE SERVICE CHANNELS |
| IT1273465B (en) * | 1995-01-27 | 1997-07-08 | Pirelli Cavi Spa | BIDIRECTIONAL OPTICAL TELECOMMUNICATION SYSTEM INCLUDING A BIDIRECTIONAL OPTICAL AMPLIFIER |
| JPH08248455A (en) * | 1995-03-09 | 1996-09-27 | Fujitsu Ltd | Optical amplifier for wavelength multiplexing |
| US5748363A (en) * | 1995-11-30 | 1998-05-05 | Fitel Inc. | Wavelength dependent crossover system for bi-directional transmission |
| US5742416A (en) * | 1996-03-28 | 1998-04-21 | Ciena Corp. | Bidirectional WDM optical communication systems with bidirectional optical amplifiers |
| US5812306A (en) * | 1996-06-14 | 1998-09-22 | Ciena Corporation | Bidirectional WDM optical communication systems with bidirectional optical amplifiers |
| JP3555824B2 (en) | 1996-11-21 | 2004-08-18 | 日本電気株式会社 | Branching device |
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| SE509807C2 (en) | 1997-05-15 | 1999-03-08 | Ericsson Telefon Ab L M | Device at add / drop node in a path length multiplexed optical communication system. |
| US5959749A (en) * | 1998-05-20 | 1999-09-28 | Nortel Networks Corporation | Optical add/drop multiplexer/demultiplexer |
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1999
- 1999-04-15 US US09/292,340 patent/US6236499B1/en not_active Expired - Lifetime
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- 2000-02-10 AT AT00903457T patent/ATE332596T1/en not_active IP Right Cessation
- 2000-02-10 WO PCT/CA2000/000121 patent/WO2000064079A1/en active IP Right Grant
- 2000-02-10 AU AU25293/00A patent/AU2529300A/en not_active Abandoned
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- 2000-02-10 DE DE60029220T patent/DE60029220T2/en not_active Expired - Lifetime
- 2000-02-10 CA CA2369754A patent/CA2369754C/en not_active Expired - Lifetime
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| WO2000064079A1 (en) | 2000-10-26 |
| EP1183801B1 (en) | 2006-07-05 |
| DE60029220T2 (en) | 2006-11-16 |
| CA2369754C (en) | 2011-08-16 |
| DE60029220D1 (en) | 2006-08-17 |
| ATE332596T1 (en) | 2006-07-15 |
| US6236499B1 (en) | 2001-05-22 |
| AU2529300A (en) | 2000-11-02 |
| EP1183801A1 (en) | 2002-03-06 |
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