JPS56149838A - Light wave length multiplexing equipment - Google Patents

Light wave length multiplexing equipment

Info

Publication number
JPS56149838A
JPS56149838A JP5299880A JP5299880A JPS56149838A JP S56149838 A JPS56149838 A JP S56149838A JP 5299880 A JP5299880 A JP 5299880A JP 5299880 A JP5299880 A JP 5299880A JP S56149838 A JPS56149838 A JP S56149838A
Authority
JP
Japan
Prior art keywords
light
light beam
mode
modulator
laser
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
JP5299880A
Other languages
Japanese (ja)
Other versions
JPS6254251B2 (en
Inventor
Akira Sugimura
Takaaki Mukai
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 JP5299880A priority Critical patent/JPS56149838A/en
Publication of JPS56149838A publication Critical patent/JPS56149838A/en
Publication of JPS6254251B2 publication Critical patent/JPS6254251B2/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)
  • Semiconductor Lasers (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)

Abstract

PURPOSE:To obtain a light mutliplexing equipment which is stable and high in multiplicity, by converting a light beam of one laser to a light beam having a lot of wave length which is obtained by means of mode synchronization. CONSTITUTION:In a mode synchronization laser 1, the frequency interval and the light beam intensity are made stable by providing an electric signal having frequency being equal to the longitudinal mode interval, to the phase modulator by the external oscillator 5. A radiation light beam from the mode synchronization laser 1 is made to branch to the light paths which are varied depending on each mode. A light beam which has been made to branch to each light path is input to each of the saturation light amplifiers 7-1-7-n, and is raised to a power level which is equal to (n) channel, too. An output from the saturation light amplifier 7 is made to pass through each light modulator 3-1-3-n, and a base band signal is superposed. In this case, each light modulator is driven by each corresponding light modulator driving device 6-1-6-n. The radiation light beams from the light modulators are collected to one light path by the light synthesizer 4.
JP5299880A 1980-04-23 1980-04-23 Light wave length multiplexing equipment Granted JPS56149838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5299880A JPS56149838A (en) 1980-04-23 1980-04-23 Light wave length multiplexing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5299880A JPS56149838A (en) 1980-04-23 1980-04-23 Light wave length multiplexing equipment

Publications (2)

Publication Number Publication Date
JPS56149838A true JPS56149838A (en) 1981-11-19
JPS6254251B2 JPS6254251B2 (en) 1987-11-13

Family

ID=12930590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5299880A Granted JPS56149838A (en) 1980-04-23 1980-04-23 Light wave length multiplexing equipment

Country Status (1)

Country Link
JP (1) JPS56149838A (en)

Cited By (8)

* 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
JPS6324728A (en) * 1986-07-17 1988-02-02 Matsushita Electric Ind Co Ltd Multiplex wavelength transmission equipment
US4726011A (en) * 1985-04-08 1988-02-16 Itt Defense Communications, A Division Of Itt Corporation Coherent optical fiber communication with frequency-division-multiplexing
JPS6467043A (en) * 1987-09-08 1989-03-13 Nippon Telegraph & Telephone Generating device for very high speed light pulse train
FR2708752A1 (en) * 1993-08-06 1995-02-10 Siemens Ag Programmable optical filter and optical assembly using such a filter.
US5434937A (en) * 1993-11-16 1995-07-18 At&T Corp. Optical filter having integrated transceivers
JP2001015858A (en) * 1999-06-29 2001-01-19 Nec Corp Multi-wavelength semiconductor laser device, its manufacture, and wavelength multiplex optical- transmission device
JP2014157291A (en) * 2013-02-15 2014-08-28 Fujitsu Ltd Optical signal processing apparatus, transmission apparatus, and optical signal processing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROCEEDING OF THE IEEE=1970 *

Cited By (8)

* 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
US4726011A (en) * 1985-04-08 1988-02-16 Itt Defense Communications, A Division Of Itt Corporation Coherent optical fiber communication with frequency-division-multiplexing
JPS6324728A (en) * 1986-07-17 1988-02-02 Matsushita Electric Ind Co Ltd Multiplex wavelength transmission equipment
JPS6467043A (en) * 1987-09-08 1989-03-13 Nippon Telegraph & Telephone Generating device for very high speed light pulse train
FR2708752A1 (en) * 1993-08-06 1995-02-10 Siemens Ag Programmable optical filter and optical assembly using such a filter.
US5434937A (en) * 1993-11-16 1995-07-18 At&T Corp. Optical filter having integrated transceivers
JP2001015858A (en) * 1999-06-29 2001-01-19 Nec Corp Multi-wavelength semiconductor laser device, its manufacture, and wavelength multiplex optical- transmission device
JP2014157291A (en) * 2013-02-15 2014-08-28 Fujitsu Ltd Optical signal processing apparatus, transmission apparatus, and optical signal processing method

Also Published As

Publication number Publication date
JPS6254251B2 (en) 1987-11-13

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