HK109897A - An optical network - Google Patents

An optical network

Info

Publication number
HK109897A
HK109897A HK109897A HK109897A HK109897A HK 109897 A HK109897 A HK 109897A HK 109897 A HK109897 A HK 109897A HK 109897 A HK109897 A HK 109897A HK 109897 A HK109897 A HK 109897A
Authority
HK
Hong Kong
Prior art keywords
optical network
network
optical
Prior art date
Application number
HK109897A
Other languages
English (en)
Inventor
Stephen Anthony Cassidy
Fiona Mackenzie
Trevor Keith White
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Publication of HK109897A publication Critical patent/HK109897A/xx

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
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2939—Network aspects
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
HK109897A 1990-11-20 1997-06-26 An optical network HK109897A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909025207A GB9025207D0 (en) 1990-11-20 1990-11-20 An optical network
PCT/GB1991/002052 WO1992009150A1 (fr) 1990-11-20 1991-11-20 Reseau optique

Publications (1)

Publication Number Publication Date
HK109897A true HK109897A (en) 1997-08-22

Family

ID=10685675

Family Applications (1)

Application Number Title Priority Date Filing Date
HK109897A HK109897A (en) 1990-11-20 1997-06-26 An optical network

Country Status (8)

Country Link
US (1) US5416864A (fr)
EP (1) EP0558558B1 (fr)
JP (1) JP3351522B2 (fr)
CA (1) CA2095113C (fr)
DE (1) DE69122766T2 (fr)
GB (1) GB9025207D0 (fr)
HK (1) HK109897A (fr)
WO (1) WO1992009150A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281463B (en) * 1993-08-23 1998-01-28 Northern Telecom Ltd Optical transmission system
CN1037735C (zh) * 1993-11-11 1998-03-11 深圳大学新技术研究中心 带有双光栅的光纤放大器
DE4411063A1 (de) * 1994-03-30 1995-10-05 Sel Alcatel Ag Verfahren zur Bestimmung der Dispersionsnullstelle eines Lichtwellenleiters
US5563733A (en) * 1994-08-25 1996-10-08 Matsushita Electric Industrial Co., Ltd. Optical fiber amplifier and optical fiber transmission system
US5539850A (en) * 1994-12-30 1996-07-23 At&T Corp. Polarization and wavelength independent optical waveguide tap
SE504278C2 (sv) * 1995-02-22 1996-12-23 Telia Ab Dämpningsfri optisk förbindelse
US5694500A (en) * 1995-10-23 1997-12-02 The Regents Of The University Of California Optical amplifier operating at 1.3 microns useful for telecommunications and based on dysprosium-doped metal chloride host materials
JP3860278B2 (ja) * 1997-03-13 2006-12-20 富士通株式会社 遠隔励起方式の波長多重光伝送システム
US6239888B1 (en) 1998-04-24 2001-05-29 Lightpointe Communications, Inc. Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
US6868237B2 (en) 1998-04-24 2005-03-15 Lightpointe Communications, Inc. Terrestrial optical communication network of integrated fiber and free-space links which requires no electro-optical conversion between links
US6763195B1 (en) 2000-01-13 2004-07-13 Lightpointe Communications, Inc. Hybrid wireless optical and radio frequency communication link
US6889009B2 (en) * 2001-04-16 2005-05-03 Lightpointe Communications, Inc. Integrated environmental control and management system for free-space optical communication systems
US20020171896A1 (en) * 2001-05-21 2002-11-21 Lightpointe Communications, Inc. Free-space optical communication system employing wavelength conversion
CA2454631A1 (fr) 2001-07-20 2003-01-30 Essex Corporation Procede et appareil de traitement de signaux optiques via une ligne a retard a derivation optique
US20030090765A1 (en) * 2001-11-09 2003-05-15 Neff Brian W. Free-space optical communication system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515431A (en) * 1982-08-11 1985-05-07 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic amplifier
US4546476A (en) * 1982-12-10 1985-10-08 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic amplifier
IT1215681B (it) * 1988-01-12 1990-02-22 Pirelli General Plc Amplificazione di segnali ottici.
US5224116A (en) * 1989-03-08 1993-06-29 Bt&D Technologies Ltd. Laser amplifier
JPH04506593A (ja) * 1989-07-13 1992-11-12 ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 光通信ネットワーク
US4963832A (en) * 1989-08-08 1990-10-16 At&T Bell Laboratories Erbium-doped fiber amplifier coupling device
GB8928237D0 (en) * 1989-12-14 1990-02-21 British Telecomm Lossless optical component
DE4014034A1 (de) * 1990-05-02 1991-11-07 Standard Elektrik Lorenz Ag Optischer verstaerker
US5115338A (en) * 1990-05-30 1992-05-19 At&T Bell Laboratories Multi-stage optical amplifier
JP3190036B2 (ja) * 1990-10-24 2001-07-16 住友電気工業株式会社 ファイバ増幅器及びファイバレーザ
DE4214766A1 (de) * 1992-05-04 1993-11-11 Sel Alcatel Ag Faseroptischer Verstärker mit rückwirkungsunempfindlichem Pumplaser
JPH05310440A (ja) * 1992-05-08 1993-11-22 Matsushita Electric Ind Co Ltd 光ファイバ、光増幅器、光伝送システム及び固体レーザ

Also Published As

Publication number Publication date
WO1992009150A1 (fr) 1992-05-29
US5416864A (en) 1995-05-16
JP3351522B2 (ja) 2002-11-25
DE69122766T2 (de) 1997-03-20
GB9025207D0 (en) 1991-01-02
CA2095113C (fr) 1998-05-05
JPH06502750A (ja) 1994-03-24
EP0558558A1 (fr) 1993-09-08
DE69122766D1 (de) 1996-11-21
EP0558558B1 (fr) 1996-10-16
CA2095113A1 (fr) 1992-05-21

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)