Patent ID: 7483638
Filing Date: 2009-01-27
Classification: H04B

Abstract:
1. An optical transceiver, comprising: an optical transmitter including a semiconductor light-emitting device that converts a transmitting signal synchronized with a transmitting clock into an transmitting optical signal; and an optical receiver including a semiconductor light-receiving device that converts a receiving optical signal into a receiving signal and a plurality of main amplifiers, each main amplifier receiving the receiving signal and including an amplifier and a delay circuit connected in at least one of upstream and downstream to the amplifier, the delay circuit delaying the receiving signal such that, when the delay circuit connected in upstream to the amplifier, the amplifiers in respective main amplifiers receive the receiving signal with timing different from each other, and, when the delay circuit connected in downstream to the amplifier, each main amplifier outputs the receiving signal with substantially same timing to each other; a phase comparator, by receiving the receiving signal, for comparing a phase of the transmitting signal and a phase of the receiving signal and for outputting a selector control signal; and a selector connected to each main amplifier, the selector selecting one of the main amplifiers based on the selector control signal.