JPS5471905A - Optical communication unit - Google Patents

Optical communication unit

Info

Publication number
JPS5471905A
JPS5471905A JP13937277A JP13937277A JPS5471905A JP S5471905 A JPS5471905 A JP S5471905A JP 13937277 A JP13937277 A JP 13937277A JP 13937277 A JP13937277 A JP 13937277A JP S5471905 A JPS5471905 A JP S5471905A
Authority
JP
Japan
Prior art keywords
signals
optical
converted
oscillators
channel
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.)
Granted
Application number
JP13937277A
Other languages
Japanese (ja)
Other versions
JPS6046578B2 (en
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 JP52139372A priority Critical patent/JPS6046578B2/en
Publication of JPS5471905A publication Critical patent/JPS5471905A/en
Publication of JPS6046578B2 publication Critical patent/JPS6046578B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Landscapes

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

Abstract

PURPOSE:To make it possible to transmit asynchronously multi-channel and large- volume signals at a time by multiplexing plural input signals after converting them to optical signals. CONSTITUTION:Input signals 11 to 13 are converted to carrier signals in modulators 21 to 23 by the output of oscillators 31 to 33 having frequencies different from each other, and are further converted to optical signals in optical oscillators 41 to 43. Then, these signals are subjected to power synthesis in synthesizing circuit 1 and are made incident to optical transmission path 2. In the receiving side, these signals are converted to electric signals in photo detector 3 and are branched to the channel having a corresponding frequency through amplifier 4 and branching circuit 5 and are supplied to detector circuits 51 to 53.
JP52139372A 1977-11-18 1977-11-18 optical communication equipment Expired JPS6046578B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52139372A JPS6046578B2 (en) 1977-11-18 1977-11-18 optical communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52139372A JPS6046578B2 (en) 1977-11-18 1977-11-18 optical communication equipment

Publications (2)

Publication Number Publication Date
JPS5471905A true JPS5471905A (en) 1979-06-08
JPS6046578B2 JPS6046578B2 (en) 1985-10-16

Family

ID=15243781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52139372A Expired JPS6046578B2 (en) 1977-11-18 1977-11-18 optical communication equipment

Country Status (1)

Country Link
JP (1) JPS6046578B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5896211A (en) * 1990-09-14 1999-04-20 Fujitsu Limited Optical communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5896211A (en) * 1990-09-14 1999-04-20 Fujitsu Limited Optical communication system

Also Published As

Publication number Publication date
JPS6046578B2 (en) 1985-10-16

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