JPS56149837A - Light frequency multiplexing equipment - Google Patents

Light frequency multiplexing equipment

Info

Publication number
JPS56149837A
JPS56149837A JP5299780A JP5299780A JPS56149837A JP S56149837 A JPS56149837 A JP S56149837A JP 5299780 A JP5299780 A JP 5299780A JP 5299780 A JP5299780 A JP 5299780A JP S56149837 A JPS56149837 A JP S56149837A
Authority
JP
Japan
Prior art keywords
light
lambda0
modulator
light beam
frequency
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
JP5299780A
Other languages
Japanese (ja)
Other versions
JPS6252974B2 (en
Inventor
Akira Sugimura
Soichi Kobayashi
Yoshihisa Yamamoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5299780A priority Critical patent/JPS56149837A/en
Publication of JPS56149837A publication Critical patent/JPS56149837A/en
Publication of JPS6252974B2 publication Critical patent/JPS6252974B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To obtain a light multiplexing equipment which is stable and high in multiplicity, by executing a frequency modulation plural times to a light beam of single mode from one laser. CONSTITUTION:A radiation light beam of the laser 1 which is made to oscillate by a single longitudinal mode is input to the branching light frequency modulator 2-1. When the modulator 2-1 is driven by an electric signal having constant frequency (f) by use of the oscillator 6, the light beam is frequency-modulated in the modulator 2-1, and branches to a light beam of wave lenght lambda0 and that of lambda0+DELTAlambda. The light beam of lambda0 and that of lambda0+DELTAlambda are input to the light modulator 3-0 through the saturation light amplifier 7-0, and the branching frequency modula tor 2-2, respectively, A radiation light beam of this modulator 2-2 is made to branch to that of lambda0+DELTAlambda which has not been wave-length-shifted and that of lambda0+2DELTAlambda which has been shifted. The light beam of lambda0+DELTAlambda passes through the saturation light amplifier 7-1 once again and is input to the light modulator 3-1, and the light beam of lambda0+2DELTAlambda is input to the branching light frequency modulator 2-3. Said procedures are repeated (n) times, and the radiation light beams from each modulator are collected to one light path by the light beam synthesizer 4.
JP5299780A 1980-04-23 1980-04-23 Light frequency multiplexing equipment Granted JPS56149837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5299780A JPS56149837A (en) 1980-04-23 1980-04-23 Light frequency multiplexing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5299780A JPS56149837A (en) 1980-04-23 1980-04-23 Light frequency multiplexing equipment

Publications (2)

Publication Number Publication Date
JPS56149837A true JPS56149837A (en) 1981-11-19
JPS6252974B2 JPS6252974B2 (en) 1987-11-09

Family

ID=12930559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5299780A Granted JPS56149837A (en) 1980-04-23 1980-04-23 Light frequency multiplexing equipment

Country Status (1)

Country Link
JP (1) JPS56149837A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237533A (en) * 1985-04-08 1986-10-22 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Coherent optical fiber communication method and system by frequency split multiplexing
US4635246A (en) * 1983-10-20 1987-01-06 The United States Of America As Represented By The Secretary Of The Navy Frequency multiplex system using injection locking of multiple laser diodes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635246A (en) * 1983-10-20 1987-01-06 The United States Of America As Represented By The Secretary Of The Navy Frequency multiplex system using injection locking of multiple laser diodes
JPS61237533A (en) * 1985-04-08 1986-10-22 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Coherent optical fiber communication method and system by frequency split multiplexing
US4726011A (en) * 1985-04-08 1988-02-16 Itt Defense Communications, A Division Of Itt Corporation Coherent optical fiber communication with frequency-division-multiplexing

Also Published As

Publication number Publication date
JPS6252974B2 (en) 1987-11-09

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