JPS564948A - Compensator for optical fiber transmission distortion - Google Patents

Compensator for optical fiber transmission distortion

Info

Publication number
JPS564948A
JPS564948A JP7988279A JP7988279A JPS564948A JP S564948 A JPS564948 A JP S564948A JP 7988279 A JP7988279 A JP 7988279A JP 7988279 A JP7988279 A JP 7988279A JP S564948 A JPS564948 A JP S564948A
Authority
JP
Japan
Prior art keywords
optical fiber
photosignal
fiber
connection part
propagating
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
JP7988279A
Other languages
Japanese (ja)
Inventor
Akira Fujita
Kazuyoshi Oshima
Munehiko Nagano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7988279A priority Critical patent/JPS564948A/en
Publication of JPS564948A publication Critical patent/JPS564948A/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
    • H04B10/50—Transmitters
    • H04B10/58—Compensation for non-linear transmitter output
    • 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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct modulation

Landscapes

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

Abstract

PURPOSE:To obtain high quality by compensating not only nonlinear distortion of a semiconductor laser but also distortion due to connection characteristics of optical fiber, by providing negative feedback on detecting part of a photosignal propagat- ing in the optical fiber following an optical fiber connection part. CONSTITUTION:Photo-output signal 5 from semiconductor laser 3 is input to the 1st optical fiber 7 and further led to the 2nd optical fiber 15 via connection part 20, and its projected light enters transmitting optical fiber 16 to obtain a photosignal propagating in fiber 16. Light split circuit 19 divides part of the photosignal into monitor optical fiber 17 and this divided photosignal becomes projected photosignal 18 by propagating in fiber 17; and it is converted 8 into electric signal 11, which is negatively fed back 13 to transmitted electric signal 1 via feedback circuit 12. Because of the constitution mentioned above, distortion due to characteristics of connection part 20 of fibers 7 and 15 can be compensated simultaneously with nonlinear distortion of laser 3, so that signals can be transmitted with fidelity.
JP7988279A 1979-06-22 1979-06-22 Compensator for optical fiber transmission distortion Pending JPS564948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7988279A JPS564948A (en) 1979-06-22 1979-06-22 Compensator for optical fiber transmission distortion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7988279A JPS564948A (en) 1979-06-22 1979-06-22 Compensator for optical fiber transmission distortion

Publications (1)

Publication Number Publication Date
JPS564948A true JPS564948A (en) 1981-01-19

Family

ID=13702610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7988279A Pending JPS564948A (en) 1979-06-22 1979-06-22 Compensator for optical fiber transmission distortion

Country Status (1)

Country Link
JP (1) JPS564948A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207756A (en) * 1983-05-10 1984-11-24 Yokogawa Hewlett Packard Ltd Optical signal generator
US6178026B1 (en) 1997-06-02 2001-01-23 Nec Corporation Analog optical transmission apparatus
JP2013146037A (en) * 2012-01-16 2013-07-25 Japan Oclaro Inc Optical transmitting/receiving apparatus and optical transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207756A (en) * 1983-05-10 1984-11-24 Yokogawa Hewlett Packard Ltd Optical signal generator
US6178026B1 (en) 1997-06-02 2001-01-23 Nec Corporation Analog optical transmission apparatus
JP2013146037A (en) * 2012-01-16 2013-07-25 Japan Oclaro Inc Optical transmitting/receiving apparatus and optical transmission system

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