JPS54118105A - Secondary signal insertion system - Google Patents

Secondary signal insertion system

Info

Publication number
JPS54118105A
JPS54118105A JP2582978A JP2582978A JPS54118105A JP S54118105 A JPS54118105 A JP S54118105A JP 2582978 A JP2582978 A JP 2582978A JP 2582978 A JP2582978 A JP 2582978A JP S54118105 A JPS54118105 A JP S54118105A
Authority
JP
Japan
Prior art keywords
signal
secondary signal
optical
main signal
light
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
JP2582978A
Other languages
English (en)
Inventor
Hiroshi Nakamura
Naomasa Hanano
Kazuo Iguchi
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 JP2582978A priority Critical patent/JPS54118105A/ja
Publication of JPS54118105A publication Critical patent/JPS54118105A/ja
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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
JP2582978A 1978-03-07 1978-03-07 Secondary signal insertion system Pending JPS54118105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2582978A JPS54118105A (en) 1978-03-07 1978-03-07 Secondary signal insertion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2582978A JPS54118105A (en) 1978-03-07 1978-03-07 Secondary signal insertion system

Publications (1)

Publication Number Publication Date
JPS54118105A true JPS54118105A (en) 1979-09-13

Family

ID=12176737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2582978A Pending JPS54118105A (en) 1978-03-07 1978-03-07 Secondary signal insertion system

Country Status (1)

Country Link
JP (1) JPS54118105A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694640A (en) * 1979-12-27 1981-07-31 Toshiba Corp Detecting device for abnormality of photoelectric transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694640A (en) * 1979-12-27 1981-07-31 Toshiba Corp Detecting device for abnormality of photoelectric transducer

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