| 摘要 |
The present invention is applicable to a burst transmission system such as an ATM-PON optical subscriber system. An optical receiver for extending tolerable variation of input signal is disclosed. The optical receiver includes; an optical signal receiver for receiving an optical signal in burst transmission to regenerate and reshape waveform of the received optical signal; and a bit synchronizer for detecting the rise and fall change points of the signal being output from the optical signal receiver using an externally-input clock, for determining a discrimination phase according to the detected change points; and for discriminating to output the received optical signal at the timing of the determined discrimination phase. The optical signal receiver provides an amplitude detector for detecting received optical signal intensity. Also, the bit synchronizer provides a phase selector for selecting a discrimination phase timing corresponding to the received optical signal intensity detected by the amplitude detector.
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