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Title:
OPTICAL RECEIVER
Document Type and Number:
Japanese Patent JPH06164502
Kind Code:
A
Abstract:

PURPOSE: To remove a noise component included in an optical signal and to transmit the optical signal which is analog-modulated for a long distance.

CONSTITUTION: An anode-side load resistor 7 and a cathode-side load resistor 8 are connected in series to both sides of an optical-to-electrical-transducer element 3. Electric signals which have opposite phases are fetched from the anode-side and the cathode side of the optical-to-electrical transducer element 3, they are amplified and the difference signal is extracted 13. In-phase noise components included in the electric signal obtained from the anode side and that obtained from the cathode side are cancelled by the extraction of the difference signal. Since the electric signal equivalent to an original signal component has the opposite phase, the electric signals are added and outputted when the difference signals is taken. Thus, a C/N is cosiderably improved.


Inventors:
TAKAYANAGI KAZUNOBU
YAMANE HIROTAKA
KAMIYA KENJI
Application Number:
JP1992000329999
Publication Date:
June 10, 1994
Filing Date:
November 16, 1992
Export Citation:
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Assignee:
MIYAZAKI ELECTRIC WIRE & CABLE
International Classes:
H04B10/40; H04B10/2507; H04B10/50; H04B10/60; (IPC1-7): H04B10/04; H04B10/06
Attorney, Agent or Firm:
佐藤 幸男



 
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