CN1623292A - 光通信网络中的噪声降低 - Google Patents
光通信网络中的噪声降低 Download PDFInfo
- Publication number
- CN1623292A CN1623292A CNA028284208A CN02828420A CN1623292A CN 1623292 A CN1623292 A CN 1623292A CN A028284208 A CNA028284208 A CN A028284208A CN 02828420 A CN02828420 A CN 02828420A CN 1623292 A CN1623292 A CN 1623292A
- Authority
- CN
- China
- Prior art keywords
- signal
- channel
- network
- optical
- add
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000002238 attenuated effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
-
- 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
- H04J14/0204—Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
-
- 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
- H04B—TRANSMISSION
- H04B2210/00—Indexing scheme relating to optical transmission systems
- H04B2210/25—Distortion or dispersion compensation
- H04B2210/258—Distortion or dispersion compensation treating each wavelength or wavelength band separately
-
- 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
- H04J14/0205—Select and combine arrangements, e.g. with an optical combiner at the output after adding or dropping
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0200177.4A GB0200177D0 (en) | 2002-01-04 | 2002-01-04 | Noise reduction in optical communications networks |
GB0200177.4 | 2002-01-04 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012104955756A Division CN103001725A (zh) | 2002-01-04 | 2002-12-17 | 光通信网络中的噪声降低 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1623292A true CN1623292A (zh) | 2005-06-01 |
Family
ID=9928647
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA028284208A Pending CN1623292A (zh) | 2002-01-04 | 2002-12-17 | 光通信网络中的噪声降低 |
CN2012104955756A Pending CN103001725A (zh) | 2002-01-04 | 2002-12-17 | 光通信网络中的噪声降低 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012104955756A Pending CN103001725A (zh) | 2002-01-04 | 2002-12-17 | 光通信网络中的噪声降低 |
Country Status (10)
Country | Link |
---|---|
US (2) | US7860396B2 (zh) |
EP (1) | EP1461886B1 (zh) |
JP (1) | JP4344614B2 (zh) |
CN (2) | CN1623292A (zh) |
AT (1) | ATE298951T1 (zh) |
AU (1) | AU2002352406A1 (zh) |
CA (1) | CA2472322C (zh) |
DE (1) | DE60204916T2 (zh) |
GB (1) | GB0200177D0 (zh) |
WO (1) | WO2003056738A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012175016A1 (en) * | 2011-06-20 | 2012-12-27 | Huawei Technologies Co., Ltd. | Method of efficiently and safely adding and deleting channels in an amplified wavelength division multiplexing system |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003032021A2 (en) | 2001-10-09 | 2003-04-17 | Infinera Corporation | TRANSMITTER PHOTONIC INTEGRATED CIRCUITS (TxPIC) AND OPTICAL TRANSPORT NETWORKS EMPLOYING TxPICs |
GB0200177D0 (en) * | 2002-01-04 | 2002-02-20 | Marconi Comm Ltd | Noise reduction in optical communications networks |
US7162113B2 (en) | 2002-10-08 | 2007-01-09 | Infinera Corporation | Deployment of electro-optic amplitude varying elements (AVEs) and electro-optic multi-functional elements (MFEs) in photonic integrated circuits (PICs) |
JP4500136B2 (ja) * | 2004-08-31 | 2010-07-14 | 株式会社日立製作所 | 波長多重光送信機 |
US20070280688A1 (en) * | 2006-04-21 | 2007-12-06 | Matisse Networks | Upgradeable optical hub and hub upgrade |
WO2011044948A1 (en) * | 2009-10-16 | 2011-04-21 | Nokia Siemens Networks Oy | Optical network and method for processing data in an optical network |
US9641275B2 (en) * | 2011-06-17 | 2017-05-02 | Tyco Electronics Subsea Communications Llc | Symmetric optical multiplexing node |
US9002194B2 (en) | 2012-04-09 | 2015-04-07 | Telefonaktiebolaget L M Ericsson (Publ) | Optical-layer multipath protection for optical network |
US9252912B2 (en) | 2012-04-09 | 2016-02-02 | Telefonaktiebolaget L M Ericsson (Publ) | Method for routing and spectrum assignment |
US8929738B2 (en) * | 2012-05-30 | 2015-01-06 | Telefonaktiebolaget L M Ericsson (Publ) | Resilience in an access subnetwork ring |
US9112635B2 (en) | 2012-06-13 | 2015-08-18 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and apparatus for a passive access subnetwork |
US20150180583A1 (en) * | 2012-07-25 | 2015-06-25 | Nec Corporation | Wavelength division multiplexing optical transmission device |
CN106303765B (zh) * | 2015-05-26 | 2019-03-15 | 中兴通讯股份有限公司 | 一种分布式自动功率优化***及方法 |
JP7462584B2 (ja) * | 2021-02-08 | 2024-04-05 | 株式会社東芝 | 高周波集積回路 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3226783C2 (de) | 1982-07-03 | 1984-04-19 | Gewerkschaft Schalker Eisenhütte, 4650 Gelsenkirchen | Verkokungsofen |
JPH0681119B2 (ja) | 1986-04-17 | 1994-10-12 | 日本電気株式会社 | 波長多重光伝送方式 |
DE4326522A1 (de) | 1993-08-06 | 1995-02-09 | Siemens Ag | Programmierbares optisches Filter und optische Schaltanordnung |
US5917625A (en) | 1993-09-09 | 1999-06-29 | Kabushiki Kaisha Toshiba | High resolution optical multiplexing and demultiplexing device in optical communication system |
US5436921A (en) * | 1994-06-22 | 1995-07-25 | Eastman Kodak Company | High dynamic range laser diode direct modulation |
DE19536231A1 (de) | 1995-09-28 | 1997-04-10 | Siemens Ag | Faserverstärker für mehrere Signale mit unterschiedlichen Wellenlängen unter Einsatz eines Wellenlängendemultiplexers und eines Wellenlängenmultiplexers |
DE19536230C2 (de) | 1995-09-28 | 1997-08-14 | Siemens Ag | Faserverstärker für mehrere Signale mit unterschiedlichen Wellenlängen unter Einsatz eines Fabry-Perot-Filters |
IT1283372B1 (it) * | 1996-07-31 | 1998-04-17 | Pirelli Cavi S P A Ora Pirelli | Dispositivo per l'inserimento e l'estrazione di segnali ottici |
US6400498B1 (en) * | 1997-05-29 | 2002-06-04 | Nec Corporation | Optical signal repeating and amplifying device and optical level adjusting device |
JP3930952B2 (ja) * | 1997-10-20 | 2007-06-13 | 富士通株式会社 | 光クロスコネクト装置,光挿入分岐装置および光源装置 |
JP3995781B2 (ja) * | 1998-02-02 | 2007-10-24 | 富士通株式会社 | 波長選択フィルタを用いた光分岐・挿入装置及び光分岐装置 |
EP0959577B1 (en) | 1998-05-19 | 2007-09-05 | Nec Corporation | Optical signal repeating and amplifying device and optical level adjusting device |
EP0967752A2 (en) | 1998-06-24 | 1999-12-29 | Sumitomo Electric Industries, Ltd. | WDM transmission system |
JP2000174699A (ja) | 1998-12-02 | 2000-06-23 | Nec Corp | 波長多重伝送用光分波合波回路 |
US6504963B1 (en) * | 1998-12-07 | 2003-01-07 | Sprint Communications Company L.P. | Optical fiber protection switch |
US6323994B1 (en) | 1999-04-12 | 2001-11-27 | Nortel Networks Limited | WDM system equalization with EDFA optical amplifiers |
GB2363014B (en) | 1999-06-30 | 2002-02-13 | Marconi Comm Ltd | Optical System |
WO2001010063A1 (fr) | 1999-07-30 | 2001-02-08 | Mitsubishi Denki Kabushiki Kaisha | Repetiteur d'amplification optique et systeme d'emission et de repetition d'amplification optique |
US6519059B1 (en) | 1999-09-30 | 2003-02-11 | Lucent Technologies Inc. | Wavelength division add/drop multiplexer |
WO2001061903A1 (en) | 2000-02-16 | 2001-08-23 | Axon Photonics, Inc. | Dynamic programmable optical add/drop module |
EP1126650A3 (en) * | 2000-02-18 | 2007-01-03 | Ericsson AB | Optical communication system |
GB2362525B (en) * | 2000-05-18 | 2002-07-24 | Marconi Comm Ltd | Radiation power equalization in wavelength division multiplexing (WDM) optical communication system |
US6904241B2 (en) * | 2001-02-06 | 2005-06-07 | Ciena Corporation | Power balanced optical add multiplexer and power balancing methods therefore |
US7106969B1 (en) * | 2001-02-12 | 2006-09-12 | Atrica Israel Ltd. | Optical network terminator |
US6633430B1 (en) * | 2001-02-15 | 2003-10-14 | Onetta, Inc. | Booster amplifier with spectral control for optical communications systems |
US20030002104A1 (en) * | 2001-06-29 | 2003-01-02 | Caroli Carl A. | Wavelength-selective add/drop arrangement for optical communication systems |
GB0200177D0 (en) * | 2002-01-04 | 2002-02-20 | Marconi Comm Ltd | Noise reduction in optical communications networks |
-
2002
- 2002-01-04 GB GBGB0200177.4A patent/GB0200177D0/en not_active Ceased
- 2002-12-17 DE DE60204916T patent/DE60204916T2/de not_active Expired - Lifetime
- 2002-12-17 WO PCT/GB2002/005721 patent/WO2003056738A1/en active IP Right Grant
- 2002-12-17 JP JP2003557130A patent/JP4344614B2/ja not_active Expired - Lifetime
- 2002-12-17 CN CNA028284208A patent/CN1623292A/zh active Pending
- 2002-12-17 CA CA2472322A patent/CA2472322C/en not_active Expired - Lifetime
- 2002-12-17 AU AU2002352406A patent/AU2002352406A1/en not_active Abandoned
- 2002-12-17 CN CN2012104955756A patent/CN103001725A/zh active Pending
- 2002-12-17 AT AT02788126T patent/ATE298951T1/de not_active IP Right Cessation
- 2002-12-17 EP EP02788126A patent/EP1461886B1/en not_active Expired - Lifetime
- 2002-12-17 US US10/500,905 patent/US7860396B2/en active Active
-
2010
- 2010-11-17 US US12/948,185 patent/US8204379B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012175016A1 (en) * | 2011-06-20 | 2012-12-27 | Huawei Technologies Co., Ltd. | Method of efficiently and safely adding and deleting channels in an amplified wavelength division multiplexing system |
US8705978B2 (en) | 2011-06-20 | 2014-04-22 | Futurewei Technologies, Inc. | Method of efficiently and safely adding and deleting channels in an amplified wavelength division multiplexing system |
Also Published As
Publication number | Publication date |
---|---|
US20050117907A1 (en) | 2005-06-02 |
CA2472322A1 (en) | 2003-07-10 |
WO2003056738A1 (en) | 2003-07-10 |
US7860396B2 (en) | 2010-12-28 |
US8204379B2 (en) | 2012-06-19 |
EP1461886B1 (en) | 2005-06-29 |
JP2005513951A (ja) | 2005-05-12 |
EP1461886A1 (en) | 2004-09-29 |
CA2472322C (en) | 2012-02-14 |
JP4344614B2 (ja) | 2009-10-14 |
DE60204916D1 (de) | 2005-08-04 |
ATE298951T1 (de) | 2005-07-15 |
AU2002352406A1 (en) | 2003-07-15 |
CN103001725A (zh) | 2013-03-27 |
DE60204916T2 (de) | 2005-12-22 |
GB0200177D0 (en) | 2002-02-20 |
US20110064412A1 (en) | 2011-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: M(DGP1) CO., LTD. Free format text: FORMER OWNER: MARCONI UK INTELLECTUAL PROP Effective date: 20070209 Owner name: L.M. ERICSSON CO., LTD. Free format text: FORMER OWNER: M(DGP1) CO., LTD. Effective date: 20070209 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20070209 Address after: Stockholm, Sweden Applicant after: ERICSSON AB Address before: Coventry, United Kingdom Applicant before: M (DGP1) Ltd. Effective date of registration: 20070209 Address after: Coventry, United Kingdom Applicant after: M (DGP1) Ltd. Address before: Coventry, United Kingdom Applicant before: MARCONI UK INTELLECTUAL PROPERTY Ltd. |
|
C12 | Rejection of a patent application after its publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20050601 |