GB9518922D0 - Controlling optical signals - Google Patents

Controlling optical signals

Info

Publication number
GB9518922D0
GB9518922D0 GBGB9518922.1A GB9518922A GB9518922D0 GB 9518922 D0 GB9518922 D0 GB 9518922D0 GB 9518922 A GB9518922 A GB 9518922A GB 9518922 D0 GB9518922 D0 GB 9518922D0
Authority
GB
United Kingdom
Prior art keywords
optical signals
controlling optical
controlling
signals
optical
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
Application number
GBGB9518922.1A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Integrated Optical Components Ltd
Original Assignee
Integrated Optical Components Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Integrated Optical Components Ltd filed Critical Integrated Optical Components Ltd
Priority to GBGB9518922.1A priority Critical patent/GB9518922D0/en
Publication of GB9518922D0 publication Critical patent/GB9518922D0/en
Priority to JP9511775A priority patent/JPH11511619A/en
Priority to PCT/GB1996/002278 priority patent/WO1997010658A1/en
Priority to EP96930285A priority patent/EP0850520A1/en
Priority to CA002232159A priority patent/CA2232159A1/en
Priority to CN96198267.5A priority patent/CN1202285A/en
Pending legal-status Critical Current

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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/25073—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion using spectral equalisation, e.g. spectral filtering
    • 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
    • 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
    • H04J14/0221—Power control, e.g. to keep the total optical power constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Communication System (AREA)
GBGB9518922.1A 1995-09-15 1995-09-15 Controlling optical signals Pending GB9518922D0 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GBGB9518922.1A GB9518922D0 (en) 1995-09-15 1995-09-15 Controlling optical signals
JP9511775A JPH11511619A (en) 1995-09-15 1996-09-13 Method of independently controlling wavelength element intensity in optical wavelength division multiplex transmission system
PCT/GB1996/002278 WO1997010658A1 (en) 1995-09-15 1996-09-13 Method for independently controlling the wavelength component powers in an optical wavelength division multiplexed transmission system
EP96930285A EP0850520A1 (en) 1995-09-15 1996-09-13 Method for independently controlling the wavelength component powers in an optical wavelength division multiplexed transmission system
CA002232159A CA2232159A1 (en) 1995-09-15 1996-09-13 Method for independently controlling the wavelength component powers in an optical wavelength division multiplexed transmission system
CN96198267.5A CN1202285A (en) 1995-09-15 1996-09-13 Method for independently controlling wavelength component powers in optical wavelength division multiplexed transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9518922.1A GB9518922D0 (en) 1995-09-15 1995-09-15 Controlling optical signals

Publications (1)

Publication Number Publication Date
GB9518922D0 true GB9518922D0 (en) 1995-11-15

Family

ID=10780786

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9518922.1A Pending GB9518922D0 (en) 1995-09-15 1995-09-15 Controlling optical signals

Country Status (6)

Country Link
EP (1) EP0850520A1 (en)
JP (1) JPH11511619A (en)
CN (1) CN1202285A (en)
CA (1) CA2232159A1 (en)
GB (1) GB9518922D0 (en)
WO (1) WO1997010658A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6151157A (en) * 1997-06-30 2000-11-21 Uniphase Telecommunications Products, Inc. Dynamic optical amplifier
WO1999000924A1 (en) * 1997-06-30 1999-01-07 Uniphase Telecommunications Products, Inc. Dynamic optical amplifier
US5915052A (en) * 1997-06-30 1999-06-22 Uniphase Telecommunications Products, Inc. Loop status monitor for determining the amplitude of the signal components of a multi-wavelength optical beam
JP3995781B2 (en) 1998-02-02 2007-10-24 富士通株式会社 Optical branching / inserting device and optical branching device using wavelength selective filter
US7116907B1 (en) 1998-02-20 2006-10-03 Fujitsu Limited Acousto-optical tunable filters cascaded together
JP3639109B2 (en) 1998-04-02 2005-04-20 富士通株式会社 Optical transmission device, optical transmission system, and optical terminal
US6542287B1 (en) * 2000-12-12 2003-04-01 Onetta, Inc. Optical amplifier systems with transient control
FR2820837B1 (en) * 2001-02-12 2003-05-16 Fastlite IMPROVEMENT ON PROGRAMMABLE ACOUSTO-OPTICAL DEVICES FOR OPTICAL COMMUNICATION SYSTEMS
JP4665344B2 (en) 2001-06-04 2011-04-06 株式会社日立製作所 Optical transmission device that compensates for inter-wavelength level deviation and optical SN deviation
EP1306987A1 (en) * 2001-10-23 2003-05-02 Pro Forma Alfa Spectrometer
WO2003036826A1 (en) * 2001-10-23 2003-05-01 Pro Forma Alfa Spectrometer
JP3986824B2 (en) * 2001-12-28 2007-10-03 富士通株式会社 Optical filter control method, control device, and optical node device
AU2002326115A1 (en) * 2002-03-14 2003-09-22 Aelis Photonics (Israel) Ltd. Dynamic broadband optical equalizer
CN101577530B (en) * 2009-06-05 2012-09-05 中兴通讯股份有限公司 Multi-passage power control circuit and method thereof
JP6103097B1 (en) * 2016-03-18 2017-03-29 日本電気株式会社 Optical transmission apparatus and control method thereof
CN118041454B (en) * 2024-04-15 2024-06-11 四川省光为通信有限公司 High-speed multimode optical module system based on adaptive wavelength division multiplexing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2787820B2 (en) * 1990-07-20 1998-08-20 キヤノン株式会社 WDM optical communication system and optical amplifier used therein
JPH04104634A (en) * 1990-08-24 1992-04-07 Hitachi Ltd Wavelength multiplex optical network
GB2280561B (en) * 1993-07-31 1997-03-26 Northern Telecom Ltd Optical transmission system

Also Published As

Publication number Publication date
WO1997010658A1 (en) 1997-03-20
CN1202285A (en) 1998-12-16
JPH11511619A (en) 1999-10-05
CA2232159A1 (en) 1997-03-20
EP0850520A1 (en) 1998-07-01

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