JPS5658340A - Safety device for light energy transmission - Google Patents

Safety device for light energy transmission

Info

Publication number
JPS5658340A
JPS5658340A JP13351079A JP13351079A JPS5658340A JP S5658340 A JPS5658340 A JP S5658340A JP 13351079 A JP13351079 A JP 13351079A JP 13351079 A JP13351079 A JP 13351079A JP S5658340 A JPS5658340 A JP S5658340A
Authority
JP
Japan
Prior art keywords
light energy
light
energy transmission
energy
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.)
Pending
Application number
JP13351079A
Other languages
Japanese (ja)
Inventor
Masayuki Takami
Takeshi Koseki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13351079A priority Critical patent/JPS5658340A/en
Publication of JPS5658340A publication Critical patent/JPS5658340A/en
Pending 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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power

Abstract

PURPOSE:To suppress the time causing leaked light in the shortest time, by detecting a failure of light energy transmission lines on the way of lines and at the transmission side. CONSTITUTION:If an energy transmission fiber 3 is damaged on its way, first the transmitted light energy of an optical branchang device 5 close to the broken point is rapidly decreased, and the reduction is detected at a branch output detector 7. This signal causes an optical switch 6 at the prestage to switch light energy from an energy transmission fiber 3 to a matching load 8 to stop the supply of light energy to the broken point. Further, the change in the reflection light produced at break is detected at a reflection light detector 4 at the transmission section to stop a light energy transmitter 1.
JP13351079A 1979-10-18 1979-10-18 Safety device for light energy transmission Pending JPS5658340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13351079A JPS5658340A (en) 1979-10-18 1979-10-18 Safety device for light energy transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13351079A JPS5658340A (en) 1979-10-18 1979-10-18 Safety device for light energy transmission

Publications (1)

Publication Number Publication Date
JPS5658340A true JPS5658340A (en) 1981-05-21

Family

ID=15106456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13351079A Pending JPS5658340A (en) 1979-10-18 1979-10-18 Safety device for light energy transmission

Country Status (1)

Country Link
JP (1) JPS5658340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0689304A1 (en) * 1994-06-17 1995-12-27 Siemens Aktiengesellschaft Apparatus for switching between optical fibres in a transmission system using redundant optical paths

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0689304A1 (en) * 1994-06-17 1995-12-27 Siemens Aktiengesellschaft Apparatus for switching between optical fibres in a transmission system using redundant optical paths

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