HU9502215D0 - Amplified telecommunication system for wavelength-division multiplexing transmission, having an equalized reception power - Google Patents
Amplified telecommunication system for wavelength-division multiplexing transmission, having an equalized reception powerInfo
- Publication number
- HU9502215D0 HU9502215D0 HU9502215A HU9502215A HU9502215D0 HU 9502215 D0 HU9502215 D0 HU 9502215D0 HU 9502215 A HU9502215 A HU 9502215A HU 9502215 A HU9502215 A HU 9502215A HU 9502215 D0 HU9502215 D0 HU 9502215D0
- Authority
- HU
- Hungary
- Prior art keywords
- optical
- signals
- telecommunication system
- fibre
- wavelength
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 6
- 239000000835 fiber Substances 0.000 abstract 2
- 239000013307 optical fiber Substances 0.000 abstract 2
- 239000002019 doping agent Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
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
-
- 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
- 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
- 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
- H04J14/02212—Power control, e.g. to keep the total optical power constant by addition of a dummy signal
-
- 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
- H04J14/02216—Power control, e.g. to keep the total optical power constant by gain equalization
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/03—WDM arrangements
- H04J14/0305—WDM arrangements in end terminals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
- Locating Faults (AREA)
- Transmitters (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Small-Scale Networks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941573A IT1273676B (it) | 1994-07-25 | 1994-07-25 | Sistema di telecomunicazione amplificata a multiplazione a divisione di lunghezza d'onda,con potenza di ricezione equalizzata |
Publications (3)
Publication Number | Publication Date |
---|---|
HU9502215D0 true HU9502215D0 (en) | 1995-09-28 |
HUT72807A HUT72807A (en) | 1996-05-28 |
HU218631B HU218631B (hu) | 2000-10-28 |
Family
ID=11369353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU9502215A HU218631B (hu) | 1994-07-25 | 1995-07-24 | Optikai telekommunikációs rendszer, optikai erősítő, valamint eljárás az optikai erősítő aktív szálja hosszúságának a meghatározására |
Country Status (21)
Country | Link |
---|---|
US (2) | US5852510A (hu) |
EP (1) | EP0695049B1 (hu) |
JP (1) | JPH08195721A (hu) |
KR (1) | KR960006371A (hu) |
CN (1) | CN1117679A (hu) |
AT (1) | ATE255302T1 (hu) |
AU (1) | AU710198B2 (hu) |
BR (1) | BR9502403A (hu) |
CA (1) | CA2154641C (hu) |
CZ (1) | CZ192295A3 (hu) |
DE (1) | DE69532178T2 (hu) |
FI (1) | FI953544A (hu) |
HU (1) | HU218631B (hu) |
IT (1) | IT1273676B (hu) |
NO (1) | NO952929L (hu) |
NZ (1) | NZ272564A (hu) |
PE (1) | PE16097A1 (hu) |
PL (1) | PL178061B1 (hu) |
RU (1) | RU2159509C2 (hu) |
SK (1) | SK93895A3 (hu) |
TW (1) | TW270265B (hu) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09116492A (ja) * | 1995-10-18 | 1997-05-02 | Nec Corp | 波長多重光増幅中継伝送方法およびその装置 |
JPH10164020A (ja) * | 1996-11-29 | 1998-06-19 | Nec Corp | 光波長多重中継伝送システムおよびその光s/n比等化方法 |
US6052393A (en) | 1996-12-23 | 2000-04-18 | The Regents Of The University Of Michigan | Broadband Sagnac Raman amplifiers and cascade lasers |
US6914717B1 (en) | 1996-12-23 | 2005-07-05 | Xtera Communications, Inc. | Multiple wavelength pumping of raman amplifier stages |
JPH10276172A (ja) * | 1997-03-28 | 1998-10-13 | Kokusai Denshin Denwa Co Ltd <Kdd> | 波長分割光処理装置およびこの波長分割光処理装置を用いた光通信伝送路 |
EP0883217B1 (en) * | 1997-06-06 | 2003-10-29 | Corning Photonic Technologies Inc. | Optical fiber telecommunication system |
CA2299441A1 (en) | 1997-08-01 | 1999-02-11 | Gianpaolo Barozzi | Multi-band amplification system for dense wavelength division multiplexing |
JPH11112068A (ja) * | 1997-10-06 | 1999-04-23 | Fujitsu Ltd | 光信号伝送システム及び光信号伝送方法 |
JP3638777B2 (ja) | 1998-02-04 | 2005-04-13 | 富士通株式会社 | 利得等化のための方法並びに該方法の実施に使用する装置及びシステム |
US6597493B2 (en) | 2000-05-05 | 2003-07-22 | The Regents Of The University Of Michigan | Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers |
US6574037B2 (en) | 1998-06-16 | 2003-06-03 | Xtera Communications, Inc. | All band amplifier |
US6321016B1 (en) * | 1998-06-19 | 2001-11-20 | Pirelli Cavi E Sistemi S.P.A. | Optical fiber having low non-linearity for WDM transmission |
US6545799B1 (en) * | 1998-09-02 | 2003-04-08 | Corning Incorporated | Method and apparatus for optical system link control |
US6606178B1 (en) | 1999-09-23 | 2003-08-12 | Corning Incorporated | Method and system to reduce FWM penalty in NRZ WDM systems |
US6421167B1 (en) | 2000-03-03 | 2002-07-16 | General Dynamics Advanced Technology Systems, Inc. | Multiple function bandwidth management systems |
US6381063B1 (en) * | 2000-03-16 | 2002-04-30 | Corning Incorporated | Long band optical amplifier |
US6437906B1 (en) | 2000-11-22 | 2002-08-20 | Cisco Technology, Inc. | All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk |
US6961522B1 (en) | 2000-11-22 | 2005-11-01 | Cisco Technology, Inc. | Automatic raman gain and tilt control for ultra-long-distance dense WDM optical communication system |
US6810214B2 (en) | 2001-03-16 | 2004-10-26 | Xtera Communications, Inc. | Method and system for reducing degradation of optical signal to noise ratio |
US6532101B2 (en) | 2001-03-16 | 2003-03-11 | Xtera Communications, Inc. | System and method for wide band Raman amplification |
US6941079B1 (en) | 2001-05-24 | 2005-09-06 | Cisco Technology, Inc. | Optical demultiplexer with multi-channel power control and tilt compensation |
US6697193B1 (en) | 2001-06-06 | 2004-02-24 | Cisco Technology, Inc. | Shared variable gain amplifier for WDM channel equalization |
US6587259B2 (en) | 2001-07-27 | 2003-07-01 | Xtera Communications, Inc. | System and method for controlling noise figure |
US6757099B2 (en) | 2001-08-15 | 2004-06-29 | Pts Corporation | Optical power transient control scheme for EDFA amplifiers |
US6594071B1 (en) | 2001-10-02 | 2003-07-15 | Xtera Communications, Inc. | Method and apparatus for amplifier control |
US20030067670A1 (en) * | 2001-10-04 | 2003-04-10 | Lacra Pavel | Dynamic optical spectral control scheme for optical amplifier sites |
CN1330119C (zh) * | 2001-11-11 | 2007-08-01 | 华为技术有限公司 | 一种用于高速传输***的光信号调节方法及光传输*** |
US6621626B1 (en) | 2001-12-05 | 2003-09-16 | Cisco Technology, Inc. | Modular optical amplifier structure for highly dense interleaved WDM systems |
US6819479B1 (en) | 2001-12-20 | 2004-11-16 | Xtera Communications, Inc. | Optical amplification using launched signal powers selected as a function of a noise figure |
US7233432B2 (en) * | 2001-12-20 | 2007-06-19 | Xtera Communications, Inc. | Pre-emphasized optical communication |
US6819478B1 (en) | 2002-03-15 | 2004-11-16 | Xtera Communications, Inc. | Fiber optic transmission system with low cost transmitter compensation |
US6778321B1 (en) | 2002-03-15 | 2004-08-17 | Xtera Communications, Inc. | Fiber optic transmission system for a metropolitan area network |
US6825973B1 (en) | 2002-03-15 | 2004-11-30 | Xtera Communications, Inc. | Reducing leading edge transients using co-propagating pumps |
US7197245B1 (en) | 2002-03-15 | 2007-03-27 | Xtera Communications, Inc. | System and method for managing system margin |
KR100458678B1 (ko) * | 2002-03-20 | 2004-12-03 | 주식회사 럭스퍼트 | 이득제공 방식의 광파워 평탄화기 |
US7054059B1 (en) | 2003-05-14 | 2006-05-30 | Cisco Technoloy, Inc. | Lumped Raman amplification structure for very wideband applications |
EP2475121A1 (en) * | 2011-01-10 | 2012-07-11 | Ntt Docomo, Inc. | Communication system and method for directly transmitting signals between nodes of a communication system |
CN104683036B (zh) * | 2015-03-23 | 2017-07-28 | 东南大学 | 一种多源激光二元相位调制与解调装置及方法 |
RU2695106C1 (ru) * | 2015-12-11 | 2019-07-19 | Хуавей Текнолоджиз Ко., Лтд. | Способ и устройство для управления уровнем мощности передачи оптического сетевого блока и оптический сетевой блок |
WO2020255362A1 (ja) * | 2019-06-21 | 2020-12-24 | 日本電信電話株式会社 | 光アンプ、受信機、光伝送システム及び光アンプ設計方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5282079A (en) | 1988-06-10 | 1994-01-25 | Pirelli General Plc | Optical fibre amplifier |
US5087108A (en) | 1989-08-11 | 1992-02-11 | Societa' Cavi Pirelli S.P.A. | Double-core active-fiber optical amplifier having a wide-band signal wavelength |
IT1237136B (it) | 1989-10-30 | 1993-05-24 | Pirelli Cavi Spa | Amplificatore ottico a fibra attiva a larga banda di lunghezza d'onda di segnale. |
US5267073A (en) | 1989-10-30 | 1993-11-30 | Pirelli Cavi S.P.A. | Amplifier adapter for optical lines |
DE4002369A1 (de) | 1990-01-27 | 1991-08-01 | Standard Elektrik Lorenz Ag | Mehrstufiger faseroptischer verstaerker |
IT1237970B (it) | 1990-02-07 | 1993-06-19 | Pirelli Cavi Spa | Amplificatore ottico a fibra attiva,con porzioni a doppio nucleo,a larga banda di lunghezza d'onda di segnale |
US5117303A (en) | 1990-08-23 | 1992-05-26 | At&T Bell Laboratories | Method of operating concatenated optical amplifiers |
US5088095A (en) | 1991-01-31 | 1992-02-11 | At&T Bell Laboratories | Gain stabilized fiber amplifier |
US5225922A (en) * | 1991-11-21 | 1993-07-06 | At&T Bell Laboratories | Optical transmission system equalizer |
US5239607A (en) * | 1992-06-23 | 1993-08-24 | Bell Communications Research, Inc. | Optical fiber amplifier with flattened gain |
US5280383A (en) | 1992-12-02 | 1994-01-18 | At&T Bell Laboratories | Dual-stage low power optical amplifier |
JP3286972B2 (ja) * | 1992-12-25 | 2002-05-27 | キヤノン株式会社 | 波長分波装置及びそれを用いた波長多重通信システム |
US5406404A (en) * | 1993-11-02 | 1995-04-11 | At&T Corp. | Method of mitigating gain peaking using a chain of fiber amplifiers |
US5504609A (en) * | 1995-05-11 | 1996-04-02 | Ciena Corporation | WDM optical communication system with remodulators |
US5726784A (en) * | 1995-05-11 | 1998-03-10 | Ciena Corp. | WDM optical communication system with remodulators and diverse optical transmitters |
US5715076A (en) * | 1995-05-11 | 1998-02-03 | Ciena Corporation | Remodulating channel selectors for WDM optical communication systems |
-
1994
- 1994-07-25 IT ITMI941573A patent/IT1273676B/it active IP Right Grant
-
1995
- 1995-07-13 NZ NZ272564A patent/NZ272564A/en not_active IP Right Cessation
- 1995-07-21 DE DE69532178T patent/DE69532178T2/de not_active Expired - Lifetime
- 1995-07-21 EP EP95111501A patent/EP0695049B1/en not_active Expired - Lifetime
- 1995-07-21 AT AT95111501T patent/ATE255302T1/de not_active IP Right Cessation
- 1995-07-24 TW TW084107656A patent/TW270265B/zh active
- 1995-07-24 HU HU9502215A patent/HU218631B/hu not_active IP Right Cessation
- 1995-07-24 NO NO952929A patent/NO952929L/no not_active Application Discontinuation
- 1995-07-24 CN CN95108635A patent/CN1117679A/zh active Pending
- 1995-07-24 PE PE1995274552A patent/PE16097A1/es not_active Application Discontinuation
- 1995-07-24 US US08/506,086 patent/US5852510A/en not_active Expired - Lifetime
- 1995-07-24 RU RU95113209/09A patent/RU2159509C2/ru active
- 1995-07-24 FI FI953544A patent/FI953544A/fi unknown
- 1995-07-25 CZ CZ951922A patent/CZ192295A3/cs unknown
- 1995-07-25 PL PL95309766A patent/PL178061B1/pl unknown
- 1995-07-25 SK SK938-95A patent/SK93895A3/sk unknown
- 1995-07-25 AU AU27184/95A patent/AU710198B2/en not_active Expired
- 1995-07-25 KR KR1019950022091A patent/KR960006371A/ko not_active Application Discontinuation
- 1995-07-25 BR BR9502403A patent/BR9502403A/pt unknown
- 1995-07-25 CA CA002154641A patent/CA2154641C/en not_active Expired - Lifetime
- 1995-07-25 JP JP7189468A patent/JPH08195721A/ja active Pending
-
1998
- 1998-11-09 US US09/188,466 patent/US6025954A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SK93895A3 (en) | 1996-02-07 |
EP0695049B1 (en) | 2003-11-26 |
US5852510A (en) | 1998-12-22 |
CN1117679A (zh) | 1996-02-28 |
AU2718495A (en) | 1996-02-08 |
FI953544A0 (fi) | 1995-07-24 |
US6025954A (en) | 2000-02-15 |
CA2154641C (en) | 2005-03-15 |
PL178061B1 (pl) | 2000-02-29 |
HU218631B (hu) | 2000-10-28 |
EP0695049A1 (en) | 1996-01-31 |
DE69532178D1 (de) | 2004-01-08 |
CA2154641A1 (en) | 1996-01-26 |
RU2159509C2 (ru) | 2000-11-20 |
NO952929L (no) | 1996-01-26 |
PL309766A1 (en) | 1996-02-05 |
FI953544A (fi) | 1996-01-26 |
AU710198B2 (en) | 1999-09-16 |
KR960006371A (ko) | 1996-02-23 |
HUT72807A (en) | 1996-05-28 |
JPH08195721A (ja) | 1996-07-30 |
IT1273676B (it) | 1997-07-09 |
ITMI941573A0 (it) | 1994-07-25 |
DE69532178T2 (de) | 2004-08-12 |
ITMI941573A1 (it) | 1996-01-25 |
TW270265B (hu) | 1996-02-11 |
CZ192295A3 (en) | 1996-02-14 |
NO952929D0 (no) | 1995-07-24 |
BR9502403A (pt) | 1996-06-25 |
PE16097A1 (es) | 1997-05-12 |
NZ272564A (en) | 1998-06-26 |
ATE255302T1 (de) | 2003-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HMM4 | Cancellation of final prot. due to non-payment of fee |