JPS52123185A - Optical communication supervisory system - Google Patents

Optical communication supervisory system

Info

Publication number
JPS52123185A
JPS52123185A JP3994876A JP3994876A JPS52123185A JP S52123185 A JPS52123185 A JP S52123185A JP 3994876 A JP3994876 A JP 3994876A JP 3994876 A JP3994876 A JP 3994876A JP S52123185 A JPS52123185 A JP S52123185A
Authority
JP
Japan
Prior art keywords
optical communication
supervisory system
communication supervisory
suddent
breakdown
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.)
Granted
Application number
JP3994876A
Other languages
English (en)
Other versions
JPS5641188B2 (ja
Inventor
Hiroshi Nakamura
Hiroaki Ooyama
Satoshi Toyoda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3994876A priority Critical patent/JPS52123185A/ja
Publication of JPS52123185A publication Critical patent/JPS52123185A/ja
Publication of JPS5641188B2 publication Critical patent/JPS5641188B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)
  • Optical Communication System (AREA)
JP3994876A 1976-04-09 1976-04-09 Optical communication supervisory system Granted JPS52123185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3994876A JPS52123185A (en) 1976-04-09 1976-04-09 Optical communication supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3994876A JPS52123185A (en) 1976-04-09 1976-04-09 Optical communication supervisory system

Publications (2)

Publication Number Publication Date
JPS52123185A true JPS52123185A (en) 1977-10-17
JPS5641188B2 JPS5641188B2 (ja) 1981-09-26

Family

ID=12567171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3994876A Granted JPS52123185A (en) 1976-04-09 1976-04-09 Optical communication supervisory system

Country Status (1)

Country Link
JP (1) JPS52123185A (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412305U (ja) * 1977-06-28 1979-01-26
JPS5471503A (en) * 1977-11-18 1979-06-08 Fujitsu Ltd Monitor system of photo reception level
JPS54152404A (en) * 1978-05-22 1979-11-30 Yagi Antenna Co Ltd Infrared-ray transmitter
JPS55150289A (en) * 1979-05-12 1980-11-22 Fujitsu Ltd Laser drive circuit
JPS56153786A (en) * 1980-04-30 1981-11-27 Sumitomo Electric Ind Ltd Monitoring circuit for bias current of laser-diode
JPS5821886A (ja) * 1981-07-31 1983-02-08 Nec Corp レ−ザ・ダイオ−ド劣化判定回路
JPS60108056U (ja) * 1983-12-23 1985-07-23 横河電機株式会社 発光素子のａｐｃ回路
JPS60142832U (ja) * 1984-03-02 1985-09-21 オリンパス光学工業株式会社 光学式ピツクアツプ装置
JPS6397061A (ja) * 1986-10-13 1988-04-27 Matsushita Electric Ind Co Ltd レ−ザ記録装置
JPS6397060A (ja) * 1986-10-13 1988-04-27 Matsushita Electric Ind Co Ltd レ−ザ記録装置
JP6704534B1 (ja) * 2019-04-24 2020-06-03 三菱電機株式会社 劣化診断装置および光トランシーバの劣化診断方法

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS626755Y2 (ja) * 1977-06-28 1987-02-17
JPS5412305U (ja) * 1977-06-28 1979-01-26
JPS5471503A (en) * 1977-11-18 1979-06-08 Fujitsu Ltd Monitor system of photo reception level
JPS54152404A (en) * 1978-05-22 1979-11-30 Yagi Antenna Co Ltd Infrared-ray transmitter
JPS55150289A (en) * 1979-05-12 1980-11-22 Fujitsu Ltd Laser drive circuit
JPS56153786A (en) * 1980-04-30 1981-11-27 Sumitomo Electric Ind Ltd Monitoring circuit for bias current of laser-diode
JPS5821886A (ja) * 1981-07-31 1983-02-08 Nec Corp レ−ザ・ダイオ−ド劣化判定回路
JPS60108056U (ja) * 1983-12-23 1985-07-23 横河電機株式会社 発光素子のａｐｃ回路
JPH0127309Y2 (ja) * 1983-12-23 1989-08-15
JPS60142832U (ja) * 1984-03-02 1985-09-21 オリンパス光学工業株式会社 光学式ピツクアツプ装置
JPS6397061A (ja) * 1986-10-13 1988-04-27 Matsushita Electric Ind Co Ltd レ−ザ記録装置
JPS6397060A (ja) * 1986-10-13 1988-04-27 Matsushita Electric Ind Co Ltd レ−ザ記録装置
JP6704534B1 (ja) * 2019-04-24 2020-06-03 三菱電機株式会社 劣化診断装置および光トランシーバの劣化診断方法
WO2020217355A1 (ja) * 2019-04-24 2020-10-29 三菱電機株式会社 劣化診断装置および光トランシーバの劣化診断方法

Also Published As

Publication number Publication date
JPS5641188B2 (ja) 1981-09-26

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