Coherent optical receiver

摘要

A coherent optical receiver for an input optical signal including a local oscillator source of coherent optical signal a single beam splitter/combiner to which both the input and local oscillator signals are applied to produce two substantially identical combined optical signals, a pair of substantially identical photodetectors electrically connected in series, each photodetector receiving one of the combined optical signals, and an output amplifier the input of which is connected to the series connection between the photodetectors.