JPS56125125A - Light modulating circuit - Google Patents

Light modulating circuit

Info

Publication number
JPS56125125A
JPS56125125A JP2896580A JP2896580A JPS56125125A JP S56125125 A JPS56125125 A JP S56125125A JP 2896580 A JP2896580 A JP 2896580A JP 2896580 A JP2896580 A JP 2896580A JP S56125125 A JPS56125125 A JP S56125125A
Authority
JP
Japan
Prior art keywords
light source
signal
nonlinear distortion
output
circuit
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
JP2896580A
Other languages
Japanese (ja)
Inventor
Toshiharu Yasuki
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 JP2896580A priority Critical patent/JPS56125125A/en
Publication of JPS56125125A publication Critical patent/JPS56125125A/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
    • H04B10/502—LED transmitters

Landscapes

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

Abstract

PURPOSE:To improve the nonlinear distortion, by using the light source the same system as the light source being the objective of the improvement of nonlinear distortion. CONSTITUTION:An input electric signal e1 modulates the outputted optical signal of the light source 7 and the light source 2 of the same type, via a modulation circuit 1. The photodetector 3 convertes the said optical signal into an electric signal and inputs it to the synthesis circuit 5 after amplifying it at the amplifier circuit 4. On the other hand, since the input signal e1 is applied to the synthesis circuit 5, the output signal e3 is e1-e2. The output signal e3 modulates the output light of the light source 7 via the modulation circuit 6. The output signal e3 includes the component of opposite polarity as the nonlinear distortion which might be produced from the light source 7, allowing to reduce the nonlinear distortion in the output light from the light source 7.
JP2896580A 1980-03-07 1980-03-07 Light modulating circuit Pending JPS56125125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2896580A JPS56125125A (en) 1980-03-07 1980-03-07 Light modulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2896580A JPS56125125A (en) 1980-03-07 1980-03-07 Light modulating circuit

Publications (1)

Publication Number Publication Date
JPS56125125A true JPS56125125A (en) 1981-10-01

Family

ID=12263120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2896580A Pending JPS56125125A (en) 1980-03-07 1980-03-07 Light modulating circuit

Country Status (1)

Country Link
JP (1) JPS56125125A (en)

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