JPS57143945A - Receiving circuit for burst optical communication - Google Patents

Receiving circuit for burst optical communication

Info

Publication number
JPS57143945A
JPS57143945A JP56028314A JP2831481A JPS57143945A JP S57143945 A JPS57143945 A JP S57143945A JP 56028314 A JP56028314 A JP 56028314A JP 2831481 A JP2831481 A JP 2831481A JP S57143945 A JPS57143945 A JP S57143945A
Authority
JP
Japan
Prior art keywords
circuit
burst
signal
burst optical
optical signal
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
JP56028314A
Other languages
Japanese (ja)
Inventor
Tsurayuki Kawatoko
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 JP56028314A priority Critical patent/JPS57143945A/en
Publication of JPS57143945A publication Critical patent/JPS57143945A/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
    • H04B10/695—Arrangements for optimizing the decision element in the receiver, e.g. by using automatic threshold control

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To eliminate variation in bit width during the reception of a burst optical signal, by eliminating the drift of a DC level by using two discriminating circuit differing in threshold voltage adequately for the front part and succeeding part of the burst optical signal respectively. CONSTITUTION:A burst optical signal 100 is processed by photoelectric conversion 200, whose output is inputted through an AC coupling preamplifier 300 to the 1st discriminating circuit 400 having the 1st threshold value and a control input terminal, and the 2nd discriminating circuit 500 having the 2nd threshold value and a control terminal. The output signals of those circuits 400 and 500 are led to an OR circuit 600, whose output is sent to a separating circuit 700 during the reception of a data signal. Once the head part of the burst signal is detected, the circuit 400 substitutes for the circuit 500, and once the tail part of the burst signal is detected, the circuit 500 substitutes for the circuit 400 in response to a signal supplied from the circuit 700 to their control input terminals.
JP56028314A 1981-03-02 1981-03-02 Receiving circuit for burst optical communication Pending JPS57143945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56028314A JPS57143945A (en) 1981-03-02 1981-03-02 Receiving circuit for burst optical communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56028314A JPS57143945A (en) 1981-03-02 1981-03-02 Receiving circuit for burst optical communication

Publications (1)

Publication Number Publication Date
JPS57143945A true JPS57143945A (en) 1982-09-06

Family

ID=12245148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56028314A Pending JPS57143945A (en) 1981-03-02 1981-03-02 Receiving circuit for burst optical communication

Country Status (1)

Country Link
JP (1) JPS57143945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147115A (en) * 1981-03-05 1982-09-10 Matsushita Electric Ind Co Ltd Information carrier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147115A (en) * 1981-03-05 1982-09-10 Matsushita Electric Ind Co Ltd Information carrier
JPH031730B2 (en) * 1981-03-05 1991-01-11 Matsushita Electric Ind Co Ltd

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