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JPS57181245A - Wavelength multiplexing and duplexing doubling system - Google Patents

Wavelength multiplexing and duplexing doubling system

Info

Publication number
JPS57181245A
JPS57181245A JP56065713A JP6571381A JPS57181245A JP S57181245 A JPS57181245 A JP S57181245A JP 56065713 A JP56065713 A JP 56065713A JP 6571381 A JP6571381 A JP 6571381A JP S57181245 A JPS57181245 A JP S57181245A
Authority
JP
Japan
Prior art keywords
signals
wavelength
optical
electric
differing
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
JP56065713A
Other languages
Japanese (ja)
Inventor
Takeshi Otsuka
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 JP56065713A priority Critical patent/JPS57181245A/en
Publication of JPS57181245A publication Critical patent/JPS57181245A/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
    • H04B10/25—Arrangements specific to fibre transmission

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 improve the reliability of an optical transmitter and an optical receiver by branching an electric signal into two, by converting both signals into signals differing in wavelength, and then by multiplexing those optical signals. CONSTITUTION:Electrooptic conversion parts 3' (wavelength lambda1) and 4' (wavelength lambda2) for converting branched electric signals into signals differing in wavelength, and an optical filter 5' for multiplexing those two kind of the optical signals differing in wavelength are provided on a transmission side. At a reception side, a filter 6' and photoelectric converters 7' and 8' for converting said different-wavelength signals into electric signals are provided. Then, electric singals branched into two on a transmission side are converted into optical signals differing in wavelength and then multiplexed, and at a reception side, the filter 6' separates the input signal into signals having wavelengths lambda1 and lambda2, which are converted inversely of the conversion of the transmission side, thus extracting the original electric signal.
JP56065713A 1981-04-30 1981-04-30 Wavelength multiplexing and duplexing doubling system Pending JPS57181245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065713A JPS57181245A (en) 1981-04-30 1981-04-30 Wavelength multiplexing and duplexing doubling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065713A JPS57181245A (en) 1981-04-30 1981-04-30 Wavelength multiplexing and duplexing doubling system

Publications (1)

Publication Number Publication Date
JPS57181245A true JPS57181245A (en) 1982-11-08

Family

ID=13294927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065713A Pending JPS57181245A (en) 1981-04-30 1981-04-30 Wavelength multiplexing and duplexing doubling system

Country Status (1)

Country Link
JP (1) JPS57181245A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105293A (en) * 1990-10-02 1992-04-14 At&T Bell Laboratories Differential optical signal transmission using a single optical fiber
US5257124A (en) * 1991-08-15 1993-10-26 General Instrument Corporation Low distortion laser system for AM fiber optic communication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105293A (en) * 1990-10-02 1992-04-14 At&T Bell Laboratories Differential optical signal transmission using a single optical fiber
US5257124A (en) * 1991-08-15 1993-10-26 General Instrument Corporation Low distortion laser system for AM fiber optic communication

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