JPS6474833A - Optical fiber sensor device - Google Patents

Optical fiber sensor device

Info

Publication number
JPS6474833A
JPS6474833A JP62231175A JP23117587A JPS6474833A JP S6474833 A JPS6474833 A JP S6474833A JP 62231175 A JP62231175 A JP 62231175A JP 23117587 A JP23117587 A JP 23117587A JP S6474833 A JPS6474833 A JP S6474833A
Authority
JP
Japan
Prior art keywords
optical
fiber
optical fiber
multiplexer
demultiplexer
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.)
Pending
Application number
JP62231175A
Other languages
Japanese (ja)
Inventor
Harushige Urata
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP62231175A priority Critical patent/JPS6474833A/en
Publication of JPS6474833A publication Critical patent/JPS6474833A/en
Pending legal-status Critical Current

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  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To measure plural objects to be measured, by delivering (n) optical signals with different wavelength to an optical sensor terminal provided at the other end of an optical fiber by switching them, and detecting back scattered light from the optical fiber. CONSTITUTION:The optical sensor terminal 3 is provided with an optical multiplexer/demultiplexer 9 in addition to optical sensors 11-1n, and the optical multiplexer/demultiplexer 9 demultiplexes or multiplexes the optical signal from the optical fiber 2 to optical signal components L21-L2n having wavelength lambda1-lambdan. The output terminal of a switch circuit 5 is selected by a control monitoring part 4, and an electrical pulse signal St is delivered to electrooptical converters 21-2n. Converted optical pulse signals L11-L1n are delivered to the fiber 2 in time series via an optical multiplexer 6 and a directional coupler 7. By supplying the back scattered light from the fiber 2 to the monitor part 4 via the coupler 7 and a photoelectrical converter 8 and detecting it at the monitor part 4, the measurement of the plural objects to be measured can be performed.
JP62231175A 1987-09-17 1987-09-17 Optical fiber sensor device Pending JPS6474833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62231175A JPS6474833A (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62231175A JPS6474833A (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Publications (1)

Publication Number Publication Date
JPS6474833A true JPS6474833A (en) 1989-03-20

Family

ID=16919493

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62231175A Pending JPS6474833A (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Country Status (1)

Country Link
JP (1) JPS6474833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216532A (en) * 1989-09-21 1993-06-01 Smiths Industries Public Limited Company Optical multiplexing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121829A (en) * 1983-12-05 1985-06-29 Nippon Telegr & Teleph Corp <Ntt> Terminal device for searching for trouble section
JPS61288298A (en) * 1985-06-17 1986-12-18 日立電線株式会社 Multipoint monitoring system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121829A (en) * 1983-12-05 1985-06-29 Nippon Telegr & Teleph Corp <Ntt> Terminal device for searching for trouble section
JPS61288298A (en) * 1985-06-17 1986-12-18 日立電線株式会社 Multipoint monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216532A (en) * 1989-09-21 1993-06-01 Smiths Industries Public Limited Company Optical multiplexing

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