JPH0551089B2 - - Google Patents

Info

Publication number
JPH0551089B2
JPH0551089B2 JP60298038A JP29803885A JPH0551089B2 JP H0551089 B2 JPH0551089 B2 JP H0551089B2 JP 60298038 A JP60298038 A JP 60298038A JP 29803885 A JP29803885 A JP 29803885A JP H0551089 B2 JPH0551089 B2 JP H0551089B2
Authority
JP
Japan
Prior art keywords
optical
optical fiber
optical loss
light
changing mechanism
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
JP60298038A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62157526A (ja
Inventor
Takahiro Asai
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP29803885A priority Critical patent/JPS62157526A/ja
Publication of JPS62157526A publication Critical patent/JPS62157526A/ja
Publication of JPH0551089B2 publication Critical patent/JPH0551089B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
JP29803885A 1985-12-28 1985-12-28 多点監視システム Granted JPS62157526A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29803885A JPS62157526A (ja) 1985-12-28 1985-12-28 多点監視システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29803885A JPS62157526A (ja) 1985-12-28 1985-12-28 多点監視システム

Publications (2)

Publication Number Publication Date
JPS62157526A JPS62157526A (ja) 1987-07-13
JPH0551089B2 true JPH0551089B2 (en, 2012) 1993-07-30

Family

ID=17854317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29803885A Granted JPS62157526A (ja) 1985-12-28 1985-12-28 多点監視システム

Country Status (1)

Country Link
JP (1) JPS62157526A (en, 2012)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008032592A (ja) * 2006-07-31 2008-02-14 Central Japan Railway Co 光ファイバ路線監視システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043606B2 (ja) * 1979-02-08 1985-09-28 古河電気工業株式会社 電気ケ−ブル
JPS58163097A (ja) * 1982-03-24 1983-09-27 古河電気工業株式会社 光フアイバ感知線
JPS5932815A (ja) * 1982-08-18 1984-02-22 Fujitsu Ltd センシング方式

Also Published As

Publication number Publication date
JPS62157526A (ja) 1987-07-13

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees