JPS56136051A - Analog optical communication system - Google Patents

Analog optical communication system

Info

Publication number
JPS56136051A
JPS56136051A JP3835680A JP3835680A JPS56136051A JP S56136051 A JPS56136051 A JP S56136051A JP 3835680 A JP3835680 A JP 3835680A JP 3835680 A JP3835680 A JP 3835680A JP S56136051 A JPS56136051 A JP S56136051A
Authority
JP
Japan
Prior art keywords
mode
led6
optical fiber
light
fiber
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
JP3835680A
Other languages
Japanese (ja)
Inventor
Fujio Hayashida
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 JP3835680A priority Critical patent/JPS56136051A/en
Publication of JPS56136051A publication Critical patent/JPS56136051A/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
    • H04B10/2581—Multimode 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 reduce the distortion of modulated light by interposing a mode mixer between a light emitting element and optical fiber. CONSTITUTION:An electric analog signal inputted to input terminal 5 of light transmitter 1 drives LED6 for direct intensity modulation. Modulated light from LED6 is led to optical fiber 3 via mode mixer 2 and then converted by photodetector 7 in light receiver 4 into an electric signal, which is amplified to a proper level and then outputted as an analog signal to output terminal 8. Said mode mixer 2 nearly uniforms mode distribution in optical fiber 3 varying with the driving current of LED6 to reduce the current dependency, thereby sending the signal to fiber 3. Consequently, even if a loss of mode dependency is generated by fiber 3, the modulated light never distorts in itself, so that the system with good linearity can e constituted.
JP3835680A 1980-03-26 1980-03-26 Analog optical communication system Pending JPS56136051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3835680A JPS56136051A (en) 1980-03-26 1980-03-26 Analog optical communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3835680A JPS56136051A (en) 1980-03-26 1980-03-26 Analog optical communication system

Publications (1)

Publication Number Publication Date
JPS56136051A true JPS56136051A (en) 1981-10-23

Family

ID=12522994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3835680A Pending JPS56136051A (en) 1980-03-26 1980-03-26 Analog optical communication system

Country Status (1)

Country Link
JP (1) JPS56136051A (en)

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