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JPS56107654A - Light receiving circuit - Google Patents

Light receiving circuit

Info

Publication number
JPS56107654A
JPS56107654A JP1031380A JP1031380A JPS56107654A JP S56107654 A JPS56107654 A JP S56107654A JP 1031380 A JP1031380 A JP 1031380A JP 1031380 A JP1031380 A JP 1031380A JP S56107654 A JPS56107654 A JP S56107654A
Authority
JP
Japan
Prior art keywords
photodiode
terminals
capacity
frequency characteristic
receiving 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
JP1031380A
Other languages
Japanese (ja)
Inventor
Yoshio Ogushi
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 JP1031380A priority Critical patent/JPS56107654A/en
Publication of JPS56107654A publication Critical patent/JPS56107654A/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

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 obtain the same frequency characteristic as when there is no capacity between terminals of each element, by applying the voltage in proportion with the output electric signal, to the terminal to which constant voltage has been applied before, such as a photodiode, etc. CONSTITUTION:The conventional by-pass capacitor is removed, and instead of it, the output signal of the receiving amplifier circuit 3 is provided to the photodetector 1 through the attenuator 6 and the coupling capacitor 7. According to this constitution, when an avalanche diode has been used for the light receiving circuit, the same amplification degree can be always kept by no signal level, and it is possible to realize a satisfactory analog signal receiving circuit which is free from waveform distortion. Also, in case when the frequency characteristic is controlled by the capacity between terminals of the photodiode of a large aperture, voltage between the photodiode is not varied by the receiving waveform, therefore there are no electric charge and discharge to the capacity between the terminals of the photodiode, and the same frequency characteristic as when there is no capacity between terminals can be obtained.
JP1031380A 1980-01-31 1980-01-31 Light receiving circuit Pending JPS56107654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1031380A JPS56107654A (en) 1980-01-31 1980-01-31 Light receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1031380A JPS56107654A (en) 1980-01-31 1980-01-31 Light receiving circuit

Publications (1)

Publication Number Publication Date
JPS56107654A true JPS56107654A (en) 1981-08-26

Family

ID=11746749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1031380A Pending JPS56107654A (en) 1980-01-31 1980-01-31 Light receiving circuit

Country Status (1)

Country Link
JP (1) JPS56107654A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020655A (en) * 1983-07-15 1985-02-01 Iwatsu Electric Co Ltd Optical detecting circuit
JPS6020654A (en) * 1983-07-15 1985-02-01 Iwatsu Electric Co Ltd Optical detecting circuit
EP0361342A2 (en) * 1988-09-28 1990-04-04 Alcatel SEL Aktiengesellschaft Optical receiver with a widened dynamic range
JPH077335A (en) * 1994-01-10 1995-01-10 Toshiba Corp Optical reception circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020655A (en) * 1983-07-15 1985-02-01 Iwatsu Electric Co Ltd Optical detecting circuit
JPS6020654A (en) * 1983-07-15 1985-02-01 Iwatsu Electric Co Ltd Optical detecting circuit
JPH0257740B2 (en) * 1983-07-15 1990-12-05 Iwatsu Electric Co Ltd
JPH0257739B2 (en) * 1983-07-15 1990-12-05 Iwatsu Electric Co Ltd
EP0361342A2 (en) * 1988-09-28 1990-04-04 Alcatel SEL Aktiengesellschaft Optical receiver with a widened dynamic range
JPH077335A (en) * 1994-01-10 1995-01-10 Toshiba Corp Optical reception circuit

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