JPS5437404A - Automatic gain control method for light receiving circuit - Google Patents

Automatic gain control method for light receiving circuit

Info

Publication number
JPS5437404A
JPS5437404A JP10342977A JP10342977A JPS5437404A JP S5437404 A JPS5437404 A JP S5437404A JP 10342977 A JP10342977 A JP 10342977A JP 10342977 A JP10342977 A JP 10342977A JP S5437404 A JPS5437404 A JP S5437404A
Authority
JP
Japan
Prior art keywords
control method
light receiving
gain control
receiving circuit
automatic gain
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
JP10342977A
Other languages
Japanese (ja)
Inventor
Koichi Asatani
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.)
NTT Inc
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 JP10342977A priority Critical patent/JPS5437404A/en
Publication of JPS5437404A publication Critical patent/JPS5437404A/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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/691—Arrangements for optimizing the photodetector in the receiver
    • H04B10/6911—Photodiode bias control, e.g. for compensating temperature variations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To secure a constant output for the main amplifier through a simple constitution by giving a horizontal synchronous isolation to the electric signal converted from the optical signal and then feeding the isolated output to the bias circuit of the optical detector to control the optical detector.
JP10342977A 1977-08-29 1977-08-29 Automatic gain control method for light receiving circuit Pending JPS5437404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10342977A JPS5437404A (en) 1977-08-29 1977-08-29 Automatic gain control method for light receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10342977A JPS5437404A (en) 1977-08-29 1977-08-29 Automatic gain control method for light receiving circuit

Publications (1)

Publication Number Publication Date
JPS5437404A true JPS5437404A (en) 1979-03-19

Family

ID=14353784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10342977A Pending JPS5437404A (en) 1977-08-29 1977-08-29 Automatic gain control method for light receiving circuit

Country Status (1)

Country Link
JP (1) JPS5437404A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991655A (en) * 1973-01-05 1974-09-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991655A (en) * 1973-01-05 1974-09-02

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