JPS56143737A - Remote selective control system for optical repeater - Google Patents

Remote selective control system for optical repeater

Info

Publication number
JPS56143737A
JPS56143737A JP4573680A JP4573680A JPS56143737A JP S56143737 A JPS56143737 A JP S56143737A JP 4573680 A JP4573680 A JP 4573680A JP 4573680 A JP4573680 A JP 4573680A JP S56143737 A JPS56143737 A JP S56143737A
Authority
JP
Japan
Prior art keywords
frequency
repeater
higher harmonic
selective control
control system
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
JP4573680A
Other languages
Japanese (ja)
Inventor
Hiroharu Wakabayashi
Yasuhiko Niino
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP4573680A priority Critical patent/JPS56143737A/en
Publication of JPS56143737A publication Critical patent/JPS56143737A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/405—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local multipliers, dividers, modulators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To exercise remote selective control over a repeater by sending a signal of a natural frequency, assigned to the repeater, from a terminal station to a transmission line and by receiving simultaneously higher harmonic components, based on the natural frequency, by the receiving circuit of the repeater. CONSTITUTION:Filter 41 tunes to frequency m1 of the higher harmonic of degree (m) of fundamental frequency 11, and filter 42 tunes to frequency n1 of the higher harmonic of degree (n). When a terminal station sends a pattern train containing frequency components of fundamental frequency 11, filters 41 and 42 generate output voltages. The outputs of filters 41 and 42 are applied to detecting circuits 51 and 52 for the discrimination of signal reception and then applied to optical switch 7 via AND circuit 9 and amplifying circuit 6 to drive the switch.
JP4573680A 1980-04-09 1980-04-09 Remote selective control system for optical repeater Pending JPS56143737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4573680A JPS56143737A (en) 1980-04-09 1980-04-09 Remote selective control system for optical repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4573680A JPS56143737A (en) 1980-04-09 1980-04-09 Remote selective control system for optical repeater

Publications (1)

Publication Number Publication Date
JPS56143737A true JPS56143737A (en) 1981-11-09

Family

ID=12727600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4573680A Pending JPS56143737A (en) 1980-04-09 1980-04-09 Remote selective control system for optical repeater

Country Status (1)

Country Link
JP (1) JPS56143737A (en)

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