JPS55159638A - Optical exchanger - Google Patents

Optical exchanger

Info

Publication number
JPS55159638A
JPS55159638A JP6687379A JP6687379A JPS55159638A JP S55159638 A JPS55159638 A JP S55159638A JP 6687379 A JP6687379 A JP 6687379A JP 6687379 A JP6687379 A JP 6687379A JP S55159638 A JPS55159638 A JP S55159638A
Authority
JP
Japan
Prior art keywords
signal
light signal
optical
control
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
JP6687379A
Other languages
Japanese (ja)
Inventor
Hiroshi Nakamura
Naomasa Hanano
Tsutomu Fukugahara
Kazuo Iguchi
Masaaki Takahashi
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 JP6687379A priority Critical patent/JPS55159638A/en
Publication of JPS55159638A publication Critical patent/JPS55159638A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/526—Optical switching systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To enable to perform effective control with a simple constitution, by picking up a part of light signal with a light branch circuit and a photodetector to convert the signal into an electric signal and to control the connected control circuits, in optical exchanger used for optical communication. CONSTITUTION:When a subscriber 1 hooks up a handset, an light signal is transmitted, and this signal is input to an optical fiber cable 3 and transmitted and fed to a optical exchanger 2. Further, a part of light signal is picked up at a light branch circuit 11 in the exchanger 2, and the rest is input to a communication line connecting optical switch 9. The light signal picked up at the circuit 11 is input to a photodetector 12, and the light signal of call start from the subscriber 1 is converted into an electric signal, and connected to the switch 9 to control a connection control circuit 10. Further, when the subscriber is finished for call and hooks down the handset, the light signal is stopped. Thus, effective control is enabled with a simple construction.
JP6687379A 1979-05-31 1979-05-31 Optical exchanger Pending JPS55159638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6687379A JPS55159638A (en) 1979-05-31 1979-05-31 Optical exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6687379A JPS55159638A (en) 1979-05-31 1979-05-31 Optical exchanger

Publications (1)

Publication Number Publication Date
JPS55159638A true JPS55159638A (en) 1980-12-11

Family

ID=13328412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6687379A Pending JPS55159638A (en) 1979-05-31 1979-05-31 Optical exchanger

Country Status (1)

Country Link
JP (1) JPS55159638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334519A (en) * 1986-07-29 1988-02-15 Nec Corp Optical switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334519A (en) * 1986-07-29 1988-02-15 Nec Corp Optical switch

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