CA2009430A1 - Surveillance et/ou controle d'amplificateurs optiques - Google Patents
Surveillance et/ou controle d'amplificateurs optiquesInfo
- Publication number
- CA2009430A1 CA2009430A1 CA2009430A CA2009430A CA2009430A1 CA 2009430 A1 CA2009430 A1 CA 2009430A1 CA 2009430 A CA2009430 A CA 2009430A CA 2009430 A CA2009430 A CA 2009430A CA 2009430 A1 CA2009430 A1 CA 2009430A1
- Authority
- CA
- Canada
- Prior art keywords
- optical amplifier
- optical
- data stream
- modulation
- amplitude modulation
- 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
Links
Classifications
-
- 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
- H04B10/2931—Signal power control using AGC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/0014—Measuring characteristics or properties thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
-
- 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
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2914—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using lumped semiconductor optical amplifiers [SOA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/0014—Measuring characteristics or properties thereof
- H01S5/0028—Laser diodes used as detectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/06808—Stabilisation of laser output parameters by monitoring the electrical laser parameters, e.g. voltage or current
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US333,218 | 1989-04-05 | ||
US07/333,218 US4918396A (en) | 1989-04-05 | 1989-04-05 | Monitoring and/or control of optical amplifiers |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2009430A1 true CA2009430A1 (fr) | 1990-10-05 |
CA2009430C CA2009430C (fr) | 1994-07-26 |
Family
ID=23301847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002009430A Expired - Fee Related CA2009430C (fr) | 1989-04-05 | 1990-02-06 | Surveillance et/ou controle d'amplificateurs optiques |
Country Status (2)
Country | Link |
---|---|
US (1) | US4918396A (fr) |
CA (1) | CA2009430C (fr) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2635423B1 (fr) * | 1988-08-11 | 1993-11-26 | Etat Francais Cnet | Procede et dispositif de filtrage optique et de photodetection de signaux optiques modules en intensite |
US5229876A (en) * | 1990-03-26 | 1993-07-20 | At&T Bell Laboratories | Telemetry for optical fiber amplifier repeater |
GB9008895D0 (en) * | 1990-04-20 | 1990-06-20 | British Telecomm | Optical communications link fault signalling |
GB2245122B (en) * | 1990-06-16 | 1994-08-03 | Stc Plc | Telemetry |
FR2680928B1 (fr) * | 1991-08-30 | 1994-11-10 | France Telecom | Systeme de communication optique utilisant des amplificateurs optiques a semiconducteur a onde progressive. |
JP2808972B2 (ja) * | 1992-02-27 | 1998-10-08 | 日本電気株式会社 | 光増幅装置 |
US5247532A (en) * | 1992-06-01 | 1993-09-21 | Finisar Corporation | Method and apparatus for stimulating a laser diode in a fiber optic transmitter |
US5317439A (en) * | 1992-07-17 | 1994-05-31 | At&T Bell Laboratories | Automatic on-line monitoring and optimization of optical network switching nodes |
US5296956A (en) * | 1992-07-17 | 1994-03-22 | At&T Bell Laboratories | Performance monitoring and fault location for optical equipment, systems and networks |
CA2155693C (fr) * | 1994-08-25 | 1999-12-14 | Daniel A. Fishman | Methode et dispositif de controle de systemes de transmission optique et de localisation de defaillance |
JP3770635B2 (ja) * | 1995-06-20 | 2006-04-26 | 富士通株式会社 | 不要強度変調成分抑圧機能を有する光受信機 |
US6108113A (en) * | 1995-12-29 | 2000-08-22 | Mci Communications Corporation | Method and system for transporting ancillary network data |
US5713358A (en) * | 1996-03-26 | 1998-02-03 | Wisconsin Alumni Research Foundation | Method for producing a time-resolved series of 3D magnetic resonance angiograms during the first passage of contrast agent |
SE514609C2 (sv) * | 1996-09-13 | 2001-03-19 | Ericsson Telefon Ab L M | System och förfarande för reglering av uteffekten hos en optisk förstärkare |
US5873825A (en) * | 1997-04-11 | 1999-02-23 | Wisconsin Alumni Research Foundation | Three dimensional digital subtraction magnetic resonance angiography with limited k-space mask |
US6211985B1 (en) | 1997-08-08 | 2001-04-03 | Tyco Submarine Systems Ltd. | Remote monitoring of an optical transmission system using line monitoring signals |
US6016326A (en) * | 1997-12-15 | 2000-01-18 | Motorola, Inc. | Method for biasing semiconductor lasers |
US6404527B1 (en) * | 1999-04-28 | 2002-06-11 | Tycom (Us) Inc. | Method and apparatus for transmitting a response signal from an optical repeater to a terminal requesting status information |
US6366393B1 (en) | 1999-08-25 | 2002-04-02 | Lucent Technologies Inc. | Fast gain control for optical amplifiers |
GB0013484D0 (en) * | 2000-06-02 | 2000-07-26 | Cit Alcatel | A method and apparatus for providing gain shape compensation |
US6483621B1 (en) * | 2000-07-28 | 2002-11-19 | Terabeam Corporation | Method and apparatus for tone tracking in wireless optical communication systems |
JP2002198598A (ja) * | 2000-12-22 | 2002-07-12 | Nec Corp | 光増幅利得制御回路および光増幅利得制御方法 |
US6417965B1 (en) | 2001-02-16 | 2002-07-09 | Onetta, Inc. | Optical amplifier control system |
US6522459B1 (en) | 2001-02-22 | 2003-02-18 | Onetta, Inc. | Temperature control and monitoring of optical detector components in an optical communication system |
US6480316B1 (en) | 2001-06-15 | 2002-11-12 | Yotta Networks | System and method for reading data content out of optical data stream without altering the optical data stream |
US6707599B1 (en) | 2001-06-25 | 2004-03-16 | Onetta, Inc. | Optical network equipment with triggered data storage |
GB2389957A (en) * | 2002-06-19 | 2003-12-24 | Kamelian Ltd | Automatic power control of a semiconductor optical amplifier |
US7924498B2 (en) * | 2007-03-06 | 2011-04-12 | Alphion Corporation | System and method for optical communication using polarization filtering |
JP2011165273A (ja) * | 2010-02-10 | 2011-08-25 | Sony Corp | レーザ装置、光ピックアップ、光ディスクドライブ装置 |
US10371499B2 (en) | 2010-12-27 | 2019-08-06 | Axsun Technologies, Inc. | Laser swept source with controlled mode locking for OCT medical imaging |
US20120162662A1 (en) * | 2010-12-27 | 2012-06-28 | Axsun Technologies, Inc. | Actively Mode Locked Laser Swept Source for OCT Medical Imaging |
US9441944B2 (en) | 2012-05-16 | 2016-09-13 | Axsun Technologies Llc | Regenerative mode locked laser swept source for OCT medical imaging |
US9698912B2 (en) * | 2015-07-02 | 2017-07-04 | Fujitsu Limited | Methods and systems for superchannel subcarrier monitoring using frequency modulation tones |
US9712249B2 (en) * | 2015-07-02 | 2017-07-18 | Fujitsu Limited | Methods and systems for superchannel subcarrier monitoring using amplitude modulated tones |
US10938484B2 (en) | 2018-10-05 | 2021-03-02 | Huawei Technologies Co., Ltd. | Monitoring performance of optical network using low-power gaps and a pilot tone |
-
1989
- 1989-04-05 US US07/333,218 patent/US4918396A/en not_active Expired - Lifetime
-
1990
- 1990-02-06 CA CA002009430A patent/CA2009430C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4918396A (en) | 1990-04-17 |
CA2009430C (fr) | 1994-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |