Title:
BURST MODE OPTICAL RECEPTION SYSTEM AND METHOD
Document Type and Number:
Japanese Patent JP3456574
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a burst mode optical reception system that has reduced waveform distortion and enhances reception capability with respect to an extinction ratio.
SOLUTION: The burst mode optical reception system that receives a burst mode optical signal and converts it into an electric signal, is provided with an amplifier 3 that has a feedback variable resistor 101, receives a current signal resulting from photoelectric conversion by a light receiving element and amplifies linearly the current signal, with a nonlinear element 102 that allows the amplifier to act nonlinear amplification and with a feedback resistor control section 14 that allows the amplifier to act nonlinear amplification, monitors input signal strength on the basis of a level of an output signal of the amplifier and controls the feedback variable resistor corresponding to the monitored input signal strength to allow the amplifier to act linear amplification.
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Inventors:
Eimi Noguchi
Application Number:
JP32038699A
Publication Date:
October 14, 2003
Filing Date:
November 10, 1999
Export Citation:
Assignee:
NEC
International Classes:
H03G5/16; H03F1/34; H03F1/52; H03F3/08; H03G3/20; H03G3/30; H04B10/07; H04B10/272; H04B10/40; H04B10/50; H04B10/556; H04B10/60; H04B10/69; (IPC1-7): H03F3/08; H03F1/34; H03F1/52; H03G3/20; H03G3/30; H03G5/16; H04B10/00; H04B10/04; H04B10/06; H04B10/14; H04B10/26; H04B10/28
Domestic Patent References:
| JP98563A | ||||
| JP10190369A | ||||
| JP2199934A | ||||
| JP1253305A | ||||
| JP9246879A | ||||
| JP629755A |
Attorney, Agent or Firm:
Yuichiro Asano