GB9902566D0 - Optical amplifier for constantly adjusting per-channel output power and method thereof - Google Patents
Optical amplifier for constantly adjusting per-channel output power and method thereofInfo
- Publication number
- GB9902566D0 GB9902566D0 GBGB9902566.0A GB9902566A GB9902566D0 GB 9902566 D0 GB9902566 D0 GB 9902566D0 GB 9902566 A GB9902566 A GB 9902566A GB 9902566 D0 GB9902566 D0 GB 9902566D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- output power
- optical amplifier
- channel output
- constantly adjusting
- adjusting per
- 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
- H04B10/294—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
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0064—Anti-reflection devices, e.g. optical isolaters
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
- H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
-
- 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
-
- 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
- H04B10/2942—Signal power control in a multiwavelength system, e.g. gain equalisation using automatic gain control [AGC]
-
- 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
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
- H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
-
- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980003502A KR19990069330A (en) | 1998-02-06 | 1998-02-06 | Optical amplifier with constant output power per channel and its method |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9902566D0 true GB9902566D0 (en) | 1999-03-24 |
GB2334397A GB2334397A (en) | 1999-08-18 |
GB2334397B GB2334397B (en) | 2000-11-15 |
Family
ID=19532657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9902566A Expired - Fee Related GB2334397B (en) | 1998-02-06 | 1999-02-08 | Optical amplifier for constantly adjusting per-channel output power and method thereof |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPH11275027A (en) |
KR (1) | KR19990069330A (en) |
CN (1) | CN1131458C (en) |
CA (1) | CA2261257A1 (en) |
FR (1) | FR2777142A1 (en) |
GB (1) | GB2334397B (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6307670B1 (en) * | 1999-12-14 | 2001-10-23 | Corning Incorporated | Pump power control for optical fiber amplifier |
AUPQ511700A0 (en) * | 2000-01-17 | 2000-02-10 | University Of Sydney, The | Method and apparatus for monitoring of data channels |
AU781588B2 (en) * | 2000-01-17 | 2005-06-02 | University Of Sydney, The | Method and apparatus for monitoring of data channels |
KR100346221B1 (en) * | 2000-09-06 | 2002-08-01 | 삼성전자 주식회사 | Gain control device and method thereof for a erbium doped fiber amplifier |
US6504989B1 (en) | 2000-10-23 | 2003-01-07 | Onetta, Inc. | Optical equipment and methods for manufacturing optical communications equipment for networks |
US6498677B1 (en) | 2000-10-23 | 2002-12-24 | Onetta, Inc. | Optical amplifier systems with transient control |
US6438010B1 (en) | 2001-03-02 | 2002-08-20 | Onetta, Inc. | Drive circuits for microelectromechanical systems devices |
US6731424B1 (en) | 2001-03-15 | 2004-05-04 | Onetta, Inc. | Dynamic gain flattening in an optical communication system |
US6529316B1 (en) | 2001-05-03 | 2003-03-04 | Onetta, Inc. | Optical network equipment with optical channel monitor and dynamic spectral filter alarms |
US6545800B1 (en) | 2001-06-05 | 2003-04-08 | Onetta, Inc. | Depolarizers for optical channel monitors |
US6483631B1 (en) | 2001-06-05 | 2002-11-19 | Onetta, Inc. | Optical amplifier spectral tilt controllers |
GB0129717D0 (en) | 2001-12-12 | 2002-01-30 | Marconi Comm Ltd | A method and an apparatus for signal transmission |
JP4198082B2 (en) * | 2004-03-24 | 2008-12-17 | 富士通株式会社 | Optical amplifier gain monitoring method and apparatus |
ATE544252T1 (en) * | 2009-06-02 | 2012-02-15 | Alcatel Lucent | METHOD AND DEVICE FOR ADJUSTING POWER GAIN |
CN103647539B (en) * | 2013-11-08 | 2017-01-11 | 上海华力微电子有限公司 | Switching device and multichannel coupling selector provided with same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2714982B1 (en) * | 1994-01-13 | 1996-02-02 | Alcatel Nv | Regulated optical amplifier. |
JP3379052B2 (en) * | 1994-09-26 | 2003-02-17 | 富士通株式会社 | WDM optical amplifier, WDM transmission system, and WDM transmission method |
US6025947A (en) * | 1996-05-02 | 2000-02-15 | Fujitsu Limited | Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied |
JPH09321701A (en) * | 1996-05-31 | 1997-12-12 | Fujitsu Ltd | Optical communication system and optical amplifier |
-
1998
- 1998-02-06 KR KR1019980003502A patent/KR19990069330A/en not_active Application Discontinuation
-
1999
- 1999-02-08 GB GB9902566A patent/GB2334397B/en not_active Expired - Fee Related
- 1999-02-08 FR FR9901439A patent/FR2777142A1/en active Pending
- 1999-02-08 JP JP11030656A patent/JPH11275027A/en active Pending
- 1999-02-08 CA CA002261257A patent/CA2261257A1/en not_active Abandoned
- 1999-02-08 CN CN99100602A patent/CN1131458C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2334397B (en) | 2000-11-15 |
FR2777142A1 (en) | 1999-10-01 |
CN1241728A (en) | 2000-01-19 |
JPH11275027A (en) | 1999-10-08 |
KR19990069330A (en) | 1999-09-06 |
CN1131458C (en) | 2003-12-17 |
CA2261257A1 (en) | 1999-08-06 |
GB2334397A (en) | 1999-08-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20080208 |