JPS63231246A - Optical fiber sensor - Google Patents

Optical fiber sensor

Info

Publication number
JPS63231246A
JPS63231246A JP62064840A JP6484087A JPS63231246A JP S63231246 A JPS63231246 A JP S63231246A JP 62064840 A JP62064840 A JP 62064840A JP 6484087 A JP6484087 A JP 6484087A JP S63231246 A JPS63231246 A JP S63231246A
Authority
JP
Japan
Prior art keywords
light
light emission
emission part
fiber
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.)
Granted
Application number
JP62064840A
Other languages
Japanese (ja)
Inventor
Yoshiaki Moriya
Masaaki Imamura
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP62064840A priority Critical patent/JPS63231246A/en
Publication of JPS63231246A publication Critical patent/JPS63231246A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To easily control variation of the output of a light source by a simple method by monitoring the quantity of leak light which can not enters a fiber for transmission and leaks and controlling a light emission part so that the quantity of light emitted by a light emission part becomes constant.
CONSTITUTION: Part of the light emitted by the light emission part 1 is made incident on the fiber 3 for signal light transmission, made incident on a photodetection part 2 through the fiber 3 for transmission, and processed and outputted by a signal processing part 6. Part of leak light which is emitted by the light emission part 1 and can not enter the fiber 3 for signal light transmission is made incident on a leak light monitoring part 5 and converted here into an electric signal corresponding to the intensity of the light. This electric signal is fed back to the light emission part 1 and compared with the set value of the light emission output to control the light emission part 1 so that the light emission output is equal to the set value invariably. Consequently, the quantity of the light emitted by the light emission part 1 is held constant.
COPYRIGHT: (C)1988,JPO&Japio
JP62064840A 1987-03-19 1987-03-19 Optical fiber sensor Granted JPS63231246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62064840A JPS63231246A (en) 1987-03-19 1987-03-19 Optical fiber sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62064840A JPS63231246A (en) 1987-03-19 1987-03-19 Optical fiber sensor

Publications (1)

Publication Number Publication Date
JPS63231246A true JPS63231246A (en) 1988-09-27

Family

ID=13269828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62064840A Granted JPS63231246A (en) 1987-03-19 1987-03-19 Optical fiber sensor

Country Status (1)

Country Link
JP (1) JPS63231246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110116080A1 (en) * 2009-11-18 2011-05-19 Yokogawa Electric Corporation Method of measuring optical loss and apparatus for measuring optical loss

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110116080A1 (en) * 2009-11-18 2011-05-19 Yokogawa Electric Corporation Method of measuring optical loss and apparatus for measuring optical loss
JP2011106992A (en) * 2009-11-18 2011-06-02 Yokogawa Electric Corp Method of measuring light loss and light loss measuring instrument
US9255861B2 (en) * 2009-11-18 2016-02-09 Yokogawa Electric Corporation Method of measuring optical loss and apparatus for measuring optical loss

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