Patent ID: 8249466
Filing Date: 2012-08-21
Classification: H04J

Abstract:
1. A polarization multiplexing optical receiver, comprising: a polarization controller configured to control a polarization state of a polarization multiplexed optical signal; a polarization splitter configured to split the polarization multiplexed optical signal for which the polarization state is controlled by the polarization controller into a first polarization signal and a second polarization signal; a first optical/electrical converter configured to convert the first polarization signal into an electrical signal; a second optical/electrical converter configured to convert the second polarization signal into an electrical signal; a first RF-power detector configured to detect a power of an output signal from the first optical/electrical converter; a second RF-power detector configured to detect a power of an output signal from the second optical/electrical converter; and a controller configured to control the polarization controller so that either a sum or a product of an output voltage from first optical/electrical converter detected by the first RF-power detector and an output voltage from the second optical/electrical converter detected by the second optical/electrical converter approaches an extremum.