HK1027692A1 - Signal transmission system - Google Patents
Signal transmission systemInfo
- Publication number
- HK1027692A1 HK1027692A1 HK00106674A HK00106674A HK1027692A1 HK 1027692 A1 HK1027692 A1 HK 1027692A1 HK 00106674 A HK00106674 A HK 00106674A HK 00106674 A HK00106674 A HK 00106674A HK 1027692 A1 HK1027692 A1 HK 1027692A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- carrier
- transmission system
- signal transmission
- detected
- gain control
- Prior art date
Links
- 230000008054 signal transmission Effects 0.000 title abstract 2
- 239000000969 carrier Substances 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 230000010355 oscillation Effects 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
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0773—Network aspects, e.g. central monitoring of transmission parameters
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
- H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
- H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
-
- 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
- H04J14/02216—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
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/07—Monitoring an optical transmission system using a supervisory signal
- H04B2210/078—Monitoring an optical transmission system using a supervisory signal using a separate wavelength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
- Small-Scale Networks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9905731A GB2347809B (en) | 1999-03-12 | 1999-03-12 | Signal transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1027692A1 true HK1027692A1 (en) | 2001-01-19 |
Family
ID=10849527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK00106674A HK1027692A1 (en) | 1999-03-12 | 2000-10-20 | Signal transmission system |
Country Status (12)
Country | Link |
---|---|
US (1) | US6515777B1 (xx) |
EP (1) | EP1035680B1 (xx) |
JP (1) | JP4237373B2 (xx) |
CN (1) | CN1192533C (xx) |
AT (1) | ATE553556T1 (xx) |
AU (1) | AU1756600A (xx) |
ES (1) | ES2384992T3 (xx) |
GB (1) | GB2347809B (xx) |
HK (1) | HK1027692A1 (xx) |
NO (1) | NO20001258L (xx) |
PT (1) | PT1035680E (xx) |
RU (1) | RU2000106109A (xx) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6785461B2 (en) | 1998-08-25 | 2004-08-31 | Molecular Optoelectronics Corp. | Blockless fiber optic attenuators and attenuation systems employing dispersion tailored polymers |
US6735394B1 (en) * | 1999-12-15 | 2004-05-11 | Tellabs Operations, Inc. | Per-channel optical amplification using saturation mode |
US7542675B1 (en) * | 2000-05-30 | 2009-06-02 | Nortel Networks Limited | Optical switch with power equalization |
US6483981B1 (en) | 2000-06-28 | 2002-11-19 | Molecular Optoelectronics Corp. | Single-channel attenuators |
US6489399B1 (en) | 2000-07-31 | 2002-12-03 | Molecular Optoelectronics Corp. | Dye-appended polymers for broadband fiber optic devices |
US7110673B2 (en) * | 2000-08-30 | 2006-09-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical communication system |
US6904241B2 (en) | 2001-02-06 | 2005-06-07 | Ciena Corporation | Power balanced optical add multiplexer and power balancing methods therefore |
US6885825B2 (en) | 2001-02-06 | 2005-04-26 | Ciena Corporation | Power balanced optical add/drop multiplexer and power balancing methods therefore |
WO2002063811A2 (en) * | 2001-02-06 | 2002-08-15 | Ciena Corporation | Power balanced optical add/drop multiplexer and power balancing methods therefore |
US7106969B1 (en) * | 2001-02-12 | 2006-09-12 | Atrica Israel Ltd. | Optical network terminator |
US6829405B1 (en) * | 2001-03-09 | 2004-12-07 | Finisar Corporation | Reconfigurable optical add-drop multiplexer |
EP1241819A3 (en) * | 2001-03-12 | 2004-09-08 | Nippon Sheet Glass Co.,Ltd. | Optical communication monitor |
US20020131106A1 (en) | 2001-03-16 | 2002-09-19 | Peter Snawerdt | Secure wave-division multiplexing telecommunications system and method |
US6611649B2 (en) | 2001-03-19 | 2003-08-26 | Molecular Optoelectronics Corporation | Variable optical attenuator with polarization maintaining fiber |
US6681073B2 (en) | 2001-03-19 | 2004-01-20 | Molecular Optoelectronics Corporation | Fiber optic power control systems and methods |
US20040100684A1 (en) * | 2001-06-07 | 2004-05-27 | Jones Kevan Peter | Line amplification system for wavelength switched optical networks |
US6621621B1 (en) * | 2001-06-07 | 2003-09-16 | Innovance, Inc. | Line amplification system for wavelength switched optical networks |
JP4576756B2 (ja) * | 2001-06-19 | 2010-11-10 | 株式会社日立製作所 | 光信号切替え装置、および、その使用方法 |
AU2002318180A1 (en) * | 2001-07-09 | 2003-01-29 | Oyster Optics, Inc. | Fiber optic telecommunications card with security detection |
US20030151799A1 (en) * | 2001-10-11 | 2003-08-14 | Innovance, Inc. | Gain control in wavelength switched optical networks |
IL146588A (en) * | 2001-11-20 | 2006-12-31 | Eci Telecom Ltd | High speed dissemination of failure information in mesh networks |
GB0127772D0 (en) * | 2001-11-20 | 2002-01-09 | Smiths Group Plc | Antennas |
GB0130214D0 (en) * | 2001-12-18 | 2002-02-06 | Cit Alcatel | Supervisory signalling for optical communications equipment |
US7058301B2 (en) * | 2002-02-28 | 2006-06-06 | Bosloy Jonathan L | Apparatus and method for planned wavelength addition and removal in a wavelength division multiplexed system |
EP1394976A1 (en) * | 2002-08-30 | 2004-03-03 | Alcatel | Channel power control method in WDM system |
AU2003288448A1 (en) * | 2002-12-17 | 2004-07-09 | Xyratex Technology Limited | Network tap module |
FR2849305B1 (fr) * | 2002-12-24 | 2005-04-29 | Cit Alcatel | Procede et dispositif perfectionnes de controle de la puissance delivree en sortie d'un noeud d'un reseau optique a commutation de bandes de longueurs d'onde |
US7444078B1 (en) * | 2003-09-18 | 2008-10-28 | At&T Intellectual Property Ii, L.P. | Transient control solution for optical networks |
DE10360607B4 (de) * | 2003-12-22 | 2006-02-23 | Siemens Ag | Verfahren und Anordnung zum Einfügen von Füllsignalen |
US7251071B2 (en) * | 2004-07-30 | 2007-07-31 | Lucent Technologies Inc. | Transient control in optical transmission systems |
JP4707399B2 (ja) * | 2004-07-30 | 2011-06-22 | 富士通株式会社 | 光分岐挿入装置 |
US7327958B2 (en) * | 2004-07-30 | 2008-02-05 | Lucent Technologies Inc. | Transient-based channel growth for optical transmission systems |
US7542678B2 (en) * | 2004-12-30 | 2009-06-02 | Alcatel-Lucent Usa Inc. | Method and apparatus for a supervisory channel in a WDM fiber-optic communication system |
CN1863027B (zh) * | 2005-05-12 | 2010-12-01 | 中兴通讯股份有限公司 | 波分复用环路传输系统自动控制装置及控制方法 |
JP4625372B2 (ja) * | 2005-05-26 | 2011-02-02 | 富士通株式会社 | 光伝送装置およびその導通試験方法並びに光伝送システム |
ITMI20050982A1 (it) * | 2005-05-26 | 2006-11-27 | Marconi Comm Spa | "metodo per il ripristino dopo una interruzione in una rete ad anello amplificata basata sulla libera ricircolazione ase e rete secondo il metodo" |
US7643758B1 (en) * | 2006-01-04 | 2010-01-05 | Cisco Technology, Inc. | CWDM system architecture with amplification |
US20080037987A1 (en) * | 2006-02-06 | 2008-02-14 | Bradley Albert M | Communication/power network having out-of-band time and control signaling |
US8849109B2 (en) * | 2006-03-30 | 2014-09-30 | Alcatel Lucent | Fault isolation and provisioning for optical switches |
CN100505591C (zh) * | 2006-06-12 | 2009-06-24 | 中兴通讯股份有限公司 | 光分插复用器环网复用段功率优化方法及其系统 |
US7362923B2 (en) * | 2006-08-07 | 2008-04-22 | Northrop Grumman Corporation | Systems and methods for measuring signal phase shift caused by optical fibers |
US8995053B2 (en) * | 2006-12-28 | 2015-03-31 | Alcatel Lucent | Positive optical amplifier power transient suppression |
EP2028778A1 (en) | 2007-08-22 | 2009-02-25 | Alcatel Lucent | Optical add-drop multiplexer |
US7746548B2 (en) * | 2007-08-29 | 2010-06-29 | Alcatel-Lucent Usa Inc. | Optical amplifier transient control with gain error limits |
US9667312B2 (en) * | 2015-01-13 | 2017-05-30 | Hughes Network Systems, Llc | Radio based automatic level control for linear radio calibration |
US10547404B1 (en) * | 2018-11-13 | 2020-01-28 | Ciena Corporation | Automatic optical link calibration with channel holders |
US11336369B2 (en) * | 2019-03-22 | 2022-05-17 | Infinera Corporation | Framework for handling signal integrity using ASE in optical networks |
CN113497665A (zh) | 2020-03-20 | 2021-10-12 | 华为技术有限公司 | 一种光开关和基于光开关的光性能检测方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4933929A (en) * | 1987-06-29 | 1990-06-12 | Nec Corporation | Wavelength multiplexed optical transmitter for generating constant-amplitude angle-modulated beams to eliminate phase noise in adjacent transmission channels |
JP3110805B2 (ja) * | 1991-07-01 | 2000-11-20 | 富士通株式会社 | 光中継システム |
SE514658C2 (sv) * | 1994-12-21 | 2001-03-26 | Ericsson Telefon Ab L M | Nodarkitektur för tillämpning av optisk optimering (OADM) |
US5680235A (en) * | 1995-04-13 | 1997-10-21 | Telefonaktiebolaget Lm Ericsson | Optical multichannel system |
GB9516017D0 (en) * | 1995-08-04 | 1995-10-04 | Stc Submarine Systems Ltd | Optical level control in wavelength add-drop multiplexing branching units |
IT1277204B1 (it) * | 1995-10-19 | 1997-11-05 | Pirelli S P A Ora Pirelli Cavi | Rete di comunicazione ottica trasparente ad anello autoprotetto |
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 (ja) * | 1996-05-31 | 1997-12-12 | Fujitsu Ltd | 光通信システム及び光増幅器 |
JPH09326770A (ja) * | 1996-06-06 | 1997-12-16 | Nec Corp | 波長分割多重伝送システムに用いられる線形中継器 |
US5719697A (en) * | 1996-10-10 | 1998-02-17 | At&T Submarine Systems, Inc. | Method and apparatus for combining add/drop optical signal lines from a plurality of branching units |
US6025941A (en) * | 1997-09-15 | 2000-02-15 | Lucent Technologies Inc. | Stable wavelength division multiplex ring network |
US6236487B1 (en) * | 1998-07-21 | 2001-05-22 | Corvis Corporation | Optical communication control system |
US6292290B1 (en) * | 1999-12-20 | 2001-09-18 | Nortel Networks Limited | Methods and apparatus for adjusting power in an optical signal, for providing a seamless optical ring and for providing a bidirectional equalized amplifier |
-
1999
- 1999-03-12 GB GB9905731A patent/GB2347809B/en not_active Expired - Lifetime
- 1999-09-08 US US09/391,757 patent/US6515777B1/en not_active Expired - Lifetime
-
2000
- 2000-02-07 PT PT00300950T patent/PT1035680E/pt unknown
- 2000-02-07 AT AT00300950T patent/ATE553556T1/de active
- 2000-02-07 ES ES00300950T patent/ES2384992T3/es not_active Expired - Lifetime
- 2000-02-07 EP EP00300950A patent/EP1035680B1/en not_active Expired - Lifetime
- 2000-02-17 AU AU17566/00A patent/AU1756600A/en not_active Abandoned
- 2000-03-10 JP JP2000066242A patent/JP4237373B2/ja not_active Expired - Lifetime
- 2000-03-10 NO NO20001258A patent/NO20001258L/no unknown
- 2000-03-10 RU RU2000106109/09A patent/RU2000106109A/ru not_active Application Discontinuation
- 2000-03-10 CN CNB001041126A patent/CN1192533C/zh not_active Expired - Lifetime
- 2000-10-20 HK HK00106674A patent/HK1027692A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CN1267156A (zh) | 2000-09-20 |
GB2347809A (en) | 2000-09-13 |
US6515777B1 (en) | 2003-02-04 |
ATE553556T1 (de) | 2012-04-15 |
JP4237373B2 (ja) | 2009-03-11 |
JP2000286801A (ja) | 2000-10-13 |
NO20001258D0 (no) | 2000-03-10 |
GB2347809B (en) | 2001-06-20 |
AU1756600A (en) | 2000-09-14 |
EP1035680A2 (en) | 2000-09-13 |
PT1035680E (pt) | 2012-06-06 |
ES2384992T3 (es) | 2012-07-16 |
RU2000106109A (ru) | 2002-01-20 |
EP1035680A3 (en) | 2005-10-05 |
EP1035680B1 (en) | 2012-04-11 |
CN1192533C (zh) | 2005-03-09 |
GB9905731D0 (en) | 1999-05-05 |
NO20001258L (no) | 2000-09-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force |