JPS5477503A - Optical communication device - Google Patents

Optical communication device

Info

Publication number
JPS5477503A
JPS5477503A JP14526777A JP14526777A JPS5477503A JP S5477503 A JPS5477503 A JP S5477503A JP 14526777 A JP14526777 A JP 14526777A JP 14526777 A JP14526777 A JP 14526777A JP S5477503 A JPS5477503 A JP S5477503A
Authority
JP
Japan
Prior art keywords
circuit
optical signal
optical
going
luminous 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
JP14526777A
Other languages
Japanese (ja)
Inventor
Takeshi Usui
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 JP14526777A priority Critical patent/JPS5477503A/en
Publication of JPS5477503A publication Critical patent/JPS5477503A/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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power

Landscapes

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

Abstract

PURPOSE:To enable the simultaneous communication in two ways by means of a single luminous element by leading out the transmitting optical signal through branch-off of the received optical signal. CONSTITUTION:Communicating apparatus 6 consisting of optical transmission circuit 2 incorporating the luminous element and optical reception circuit 3 is installed, along with communication apparatus 7 comprising circuit 3 and optical modulator circuit 5 plus the return optical transmission line between apparatus 6 and 7. Thus the modulation is given so that the nearly constant average electric power may be ensured for the going optical signal from apparatus 6 to 7. And part of the reception power of the going optical signal is branched off through optical modulator circuit 5 to be piled, thus using the optical signal which underwent the intensity modulation for the coming-back optical signal from apparatus 7 to 6. The avalanche photo diode is used for the photo detector in circuit 3 of apparatus 6, and the photo diode is used for circuit 3 of apparatus 7 respectively.
JP14526777A 1977-12-02 1977-12-02 Optical communication device Pending JPS5477503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14526777A JPS5477503A (en) 1977-12-02 1977-12-02 Optical communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14526777A JPS5477503A (en) 1977-12-02 1977-12-02 Optical communication device

Publications (1)

Publication Number Publication Date
JPS5477503A true JPS5477503A (en) 1979-06-21

Family

ID=15381167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14526777A Pending JPS5477503A (en) 1977-12-02 1977-12-02 Optical communication device

Country Status (1)

Country Link
JP (1) JPS5477503A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05235873A (en) * 1991-10-04 1993-09-10 Alcatel Cit Bidirectional transmission system especially by optical fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05235873A (en) * 1991-10-04 1993-09-10 Alcatel Cit Bidirectional transmission system especially by optical fiber

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