Title:
OPTICAL RECEIVER AND OPTICAL RECEPTION METHOD
Document Type and Number:
Japanese Patent JP3712060
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical receiver whose quality of a received signal and electric performance are prevented from lowering when an optical signal including noise and waveform distortion is received.
SOLUTION: The optical receiver is provided with a step response element 1 for comparing a level of a received optical signal with a threshold Vth and for outputting the received optical signal by performing waveform shaping to the signal based on a comparison result, an optical power monitor 4 for monitoring average optical power of the received optical signal to be inputted in the step response element 1, a threshold level setting part 5 for setting the threshold Vth of the step response element 1 as the optimal value based on an optical power monitored value from the optical power monitor 4, an optic/ electric conversion part 2 for outputting the received optical signal from the step response element 1 by converting the signal into an electric signal and a clock/date reproduction part 3 for reproducing the electric signal from the optic/electric conversion part 2 as a clock signal and a data signal.
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Inventors:
Yoshihisa Inada
Application Number:
JP2001356052A
Publication Date:
November 02, 2005
Filing Date:
November 21, 2001
Export Citation:
Assignee:
NEC
International Classes:
H04B10/556; H04B10/07; H04B10/2507; (IPC1-7): H04B10/02; H04B10/00; H04B10/18
Domestic Patent References:
| JP11168431A | ||||
| JP9211509A | ||||
| JP2000341344A | ||||
| JP11502636A | ||||
| JP2001230728A | ||||
| JP11266203A |
Attorney, Agent or Firm:
Akio Miyazaki
Shinichi Iwata
Masaaki Ogata
Nobuyuki Kaneda
Katsuhiro Ito
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata
Nobuyuki Kaneda
Katsuhiro Ito
Ishibashi Masayuki