JPS6322694B2 - - Google Patents

Info

Publication number
JPS6322694B2
JPS6322694B2 JP56171925A JP17192581A JPS6322694B2 JP S6322694 B2 JPS6322694 B2 JP S6322694B2 JP 56171925 A JP56171925 A JP 56171925A JP 17192581 A JP17192581 A JP 17192581A JP S6322694 B2 JPS6322694 B2 JP S6322694B2
Authority
JP
Japan
Prior art keywords
optical fiber
light
fiber line
frequency
monitoring
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
Application number
JP56171925A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5871740A (ja
Inventor
Kenji Okada
Yoichi Nagata
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
Original Assignee
Nippon Telegraph and Telephone Corp
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 filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56171925A priority Critical patent/JPS5871740A/ja
Publication of JPS5871740A publication Critical patent/JPS5871740A/ja
Publication of JPS6322694B2 publication Critical patent/JPS6322694B2/ja
Granted 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • 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]

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Communication System (AREA)
JP56171925A 1981-10-26 1981-10-26 光フアイバ線路の監視方式 Granted JPS5871740A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56171925A JPS5871740A (ja) 1981-10-26 1981-10-26 光フアイバ線路の監視方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56171925A JPS5871740A (ja) 1981-10-26 1981-10-26 光フアイバ線路の監視方式

Publications (2)

Publication Number Publication Date
JPS5871740A JPS5871740A (ja) 1983-04-28
JPS6322694B2 true JPS6322694B2 (fr) 1988-05-12

Family

ID=15932384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56171925A Granted JPS5871740A (ja) 1981-10-26 1981-10-26 光フアイバ線路の監視方式

Country Status (1)

Country Link
JP (1) JPS5871740A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01211263A (ja) * 1988-02-17 1989-08-24 Sony Corp 記録再生装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000358261A (ja) 1999-06-16 2000-12-26 Nec Corp 光クロスコネクト装置及び光ネットワーク装置並びに接続状態監視方法
JP2015170871A (ja) * 2014-03-04 2015-09-28 富士通株式会社 光伝送システム及び光受信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01211263A (ja) * 1988-02-17 1989-08-24 Sony Corp 記録再生装置

Also Published As

Publication number Publication date
JPS5871740A (ja) 1983-04-28

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