DE69125065D1 - Lichtübertragungssystem - Google Patents

Lichtübertragungssystem

Info

Publication number
DE69125065D1
DE69125065D1 DE69125065T DE69125065T DE69125065D1 DE 69125065 D1 DE69125065 D1 DE 69125065D1 DE 69125065 T DE69125065 T DE 69125065T DE 69125065 T DE69125065 T DE 69125065T DE 69125065 D1 DE69125065 D1 DE 69125065D1
Authority
DE
Germany
Prior art keywords
transmission system
light transmission
light
transmission
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.)
Expired - Fee Related
Application number
DE69125065T
Other languages
English (en)
Other versions
DE69125065T2 (de
Inventor
Masayuki Shigematsu
Kohji Nakazato
Izumi Sankawa
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.)
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries 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 Nippon Telegraph and Telephone Corp, Sumitomo Electric Industries Ltd filed Critical Nippon Telegraph and Telephone Corp
Application granted granted Critical
Publication of DE69125065D1 publication Critical patent/DE69125065D1/de
Publication of DE69125065T2 publication Critical patent/DE69125065T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B10/03—Arrangements for fault recovery
    • H04B10/038—Arrangements for fault recovery using bypasses
    • 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
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Lasers (AREA)
DE69125065T 1990-06-19 1991-06-18 Lichtübertragungssystem Expired - Fee Related DE69125065T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02161077A JP3100386B2 (ja) 1990-06-19 1990-06-19 光通信システム

Publications (2)

Publication Number Publication Date
DE69125065D1 true DE69125065D1 (de) 1997-04-17
DE69125065T2 DE69125065T2 (de) 1997-06-19

Family

ID=15728191

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69125065T Expired - Fee Related DE69125065T2 (de) 1990-06-19 1991-06-18 Lichtübertragungssystem

Country Status (7)

Country Link
EP (1) EP0467080B1 (de)
JP (1) JP3100386B2 (de)
AU (1) AU632697B2 (de)
CA (1) CA2044919C (de)
DE (1) DE69125065T2 (de)
FI (1) FI103236B (de)
NO (1) NO308499B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9022681D0 (en) * 1990-10-18 1990-11-28 British Telecomm Passive optical network
CA2069567C (en) * 1991-05-27 2001-10-30 Kazunori Nakamura Optical amplification apparatus
IT1279126B1 (it) * 1995-04-18 1997-12-04 Sip Amplificatore ottico bidirezionale a fibra attiva.
GB9526176D0 (en) * 1995-12-21 1996-02-21 Stc Submarine Systems Ltd System fibre break detection in systems using ropas
JPH09261187A (ja) * 1996-03-19 1997-10-03 Fujitsu Ltd 無中継光伝送システムのリモートアンプおよび障害点標定方法
JP3107033B2 (ja) 1998-03-09 2000-11-06 日本電気株式会社 光増幅装置とこれを含む光伝送装置の伝送路破断点検出方法および光増幅装置を用いた双方向波長多重光伝送装置
US9410866B2 (en) 2012-08-29 2016-08-09 Telefonaktiebolaget L M Ericsson (Publ) Device for monitoring an optical fibre
EP2965451A4 (de) * 2013-03-05 2016-11-30 Ericsson Telefon Ab L M Optische verstärkeranordnung
EP2819321A1 (de) * 2013-06-27 2014-12-31 Alcatel Lucent Paketoptischer Add-Drop-Multiplex-Knoten für ein optisches Ringnetzwerk
WO2021111699A1 (ja) * 2019-12-04 2021-06-10 日本電気株式会社 光ファイバセンシングシステム、中継装置及びセンシング方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581859B2 (ja) * 1975-02-14 1983-01-13 株式会社日立製作所 ヒカリチユウケイキ
JPS56140257U (de) * 1980-03-24 1981-10-23
JPS5991745A (ja) * 1982-11-18 1984-05-26 Yamatake Honeywell Co Ltd 光通信用結合装置
JPS59188249A (ja) * 1984-03-22 1984-10-25 Hitachi Ltd 光中継増幅器
JPH021631A (ja) * 1988-06-09 1990-01-05 Fujitsu Ltd 光ケーブル通信方式

Also Published As

Publication number Publication date
DE69125065T2 (de) 1997-06-19
NO912327D0 (no) 1991-06-17
EP0467080A1 (de) 1992-01-22
AU632697B2 (en) 1993-01-07
JP3100386B2 (ja) 2000-10-16
AU7848891A (en) 1992-01-02
CA2044919A1 (en) 1991-12-20
FI912962A0 (fi) 1991-06-18
FI103236B1 (fi) 1999-05-14
NO308499B1 (no) 2000-09-18
FI103236B (fi) 1999-05-14
NO912327L (no) 1991-12-20
JPH0451620A (ja) 1992-02-20
EP0467080B1 (de) 1997-03-12
FI912962A (fi) 1991-12-20
CA2044919C (en) 1996-06-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee