Optical signal reception control circuit and method for controlling reception of optical signal

摘要

An optical signal reception control circuit which includes an identifying circuit which identifies data included in a burst optical signal and which outputs data and an envelope generating circuit which detects the start of reception of the burst optical signal and which outputs an envelope signal corresponding to a reception period of the burst optical signal. The optical signal reception control circuit also includes a fixed signal output circuit which outputs a fixed signal of a predetermined level for a null signal period in which the data is not included and a selector which selects the output of the identifying circuit when the envelope signal is outputted and which selects the output of the fixed signal output circuit when the envelope signal is not outputted.