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JPS51120742A - Cross type branching device - Google Patents

Cross type branching device

Info

Publication number
JPS51120742A
JPS51120742A JP50046211A JP4621175A JPS51120742A JP S51120742 A JPS51120742 A JP S51120742A JP 50046211 A JP50046211 A JP 50046211A JP 4621175 A JP4621175 A JP 4621175A JP S51120742 A JPS51120742 A JP S51120742A
Authority
JP
Japan
Prior art keywords
branching device
cross type
type branching
cross
breakage
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
JP50046211A
Other languages
Japanese (ja)
Inventor
Kikuo Doi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP50046211A priority Critical patent/JPS51120742A/en
Publication of JPS51120742A publication Critical patent/JPS51120742A/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
    • H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To monitor fibers for damage or breakage.
JP50046211A 1975-04-15 1975-04-15 Cross type branching device Pending JPS51120742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50046211A JPS51120742A (en) 1975-04-15 1975-04-15 Cross type branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50046211A JPS51120742A (en) 1975-04-15 1975-04-15 Cross type branching device

Publications (1)

Publication Number Publication Date
JPS51120742A true JPS51120742A (en) 1976-10-22

Family

ID=12740747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50046211A Pending JPS51120742A (en) 1975-04-15 1975-04-15 Cross type branching device

Country Status (1)

Country Link
JP (1) JPS51120742A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5362334U (en) * 1976-10-29 1978-05-26
JPS5421547U (en) * 1977-07-14 1979-02-13
JPS5483448A (en) * 1977-12-15 1979-07-03 Nec Corp Machanical photo switch
JPS56123308U (en) * 1981-01-22 1981-09-19
JPS5960418A (en) * 1982-09-30 1984-04-06 Ricoh Co Ltd Optical image formation system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5362334U (en) * 1976-10-29 1978-05-26
JPS5421547U (en) * 1977-07-14 1979-02-13
JPS5483448A (en) * 1977-12-15 1979-07-03 Nec Corp Machanical photo switch
JPS56123308U (en) * 1981-01-22 1981-09-19
JPS5960418A (en) * 1982-09-30 1984-04-06 Ricoh Co Ltd Optical image formation system

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