JPS56758A - Bidirectional optical transmission system - Google Patents

Bidirectional optical transmission system

Info

Publication number
JPS56758A
JPS56758A JP7619779A JP7619779A JPS56758A JP S56758 A JPS56758 A JP S56758A JP 7619779 A JP7619779 A JP 7619779A JP 7619779 A JP7619779 A JP 7619779A JP S56758 A JPS56758 A JP S56758A
Authority
JP
Japan
Prior art keywords
transmission system
switches
light emitting
optical fiber
emitting element
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
JP7619779A
Other languages
Japanese (ja)
Inventor
Takahiro Asai
Shigeo Okada
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP7619779A priority Critical patent/JPS56758A/en
Publication of JPS56758A publication Critical patent/JPS56758A/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
    • H04B10/40—Transceivers
    • H04B10/43—Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Programmable Controllers (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To realize the bidirectional optical fiber transmission system low in cost, and simple and practical, by switching control of light emission and photo detection in time sharing, by using the light emitting element as photodetector with the selector switch. CONSTITUTION:The electric signal entered to the bidirectional transmission system 39 drives the light emitting element 12a via the light emitting element drive circuit 13a, and change-over switch 19a to transmit optical signal to the optical fiber 31, and this optical signal is incident to the photodetector 12b at the reception end. The output current of the element 12b passes through the photo current amplifier circuit 14b via the change-over switch 19b and goes to the output terminal 16b. The electric signal input from the opposite terminal 15b reaches the terminal 16a with the element 12b playing light emission function and with the element 12a playing photo detection function. In this case, the switch control circuits 18a, 18b control the switches 19a, 19b and the switches 20a, 20b in time sharing, and control is made so that the switches 20a, 20b are OFF when the switches 19a, 19b are ON. Thus, practical bidirectional optical fiber transmission system can be realized.
JP7619779A 1979-06-15 1979-06-15 Bidirectional optical transmission system Pending JPS56758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7619779A JPS56758A (en) 1979-06-15 1979-06-15 Bidirectional optical transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7619779A JPS56758A (en) 1979-06-15 1979-06-15 Bidirectional optical transmission system

Publications (1)

Publication Number Publication Date
JPS56758A true JPS56758A (en) 1981-01-07

Family

ID=13598416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7619779A Pending JPS56758A (en) 1979-06-15 1979-06-15 Bidirectional optical transmission system

Country Status (1)

Country Link
JP (1) JPS56758A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130636A (en) * 1982-01-29 1983-08-04 Niles Parts Co Ltd Bilateral optical communication controlling circuit
JPS59181835A (en) * 1983-03-25 1984-10-16 カーエー　コムニカチオンス―エレクトロニーク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング　ウント　コンパニ Light transmitter/receiver
JPS60254303A (en) * 1984-05-31 1985-12-16 Mitsubishi Electric Corp Numerical control device
JPS61175706A (en) * 1985-01-30 1986-08-07 Mitsubishi Electric Corp Numerical controller
JPS63160435A (en) * 1986-12-24 1988-07-04 Oki Electric Ind Co Ltd Switching type optical transmitter for light emitting and receiving element
JPS63171033A (en) * 1987-01-05 1988-07-14 Oki Electric Ind Co Ltd Time division optical transmission equipment with light emitting and receiving element juxtaposed

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5480002A (en) * 1977-12-09 1979-06-26 Toshiba Corp Optical transmission/reception system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5480002A (en) * 1977-12-09 1979-06-26 Toshiba Corp Optical transmission/reception system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130636A (en) * 1982-01-29 1983-08-04 Niles Parts Co Ltd Bilateral optical communication controlling circuit
JPS59181835A (en) * 1983-03-25 1984-10-16 カーエー　コムニカチオンス―エレクトロニーク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング　ウント　コンパニ Light transmitter/receiver
JPS60254303A (en) * 1984-05-31 1985-12-16 Mitsubishi Electric Corp Numerical control device
JPS61175706A (en) * 1985-01-30 1986-08-07 Mitsubishi Electric Corp Numerical controller
JPS63160435A (en) * 1986-12-24 1988-07-04 Oki Electric Ind Co Ltd Switching type optical transmitter for light emitting and receiving element
JPS63171033A (en) * 1987-01-05 1988-07-14 Oki Electric Ind Co Ltd Time division optical transmission equipment with light emitting and receiving element juxtaposed

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