OPTICAL REMODULATOR THAT REMODULATES MODULATED OPTICAL SIGNAL AND OPTICAL REMODULATING METHOD

摘要

An optical remodulator includes: a polarization diversity modulator (15) configured to modulate an input optical signal to generate an output optical signal by using a first optical modulator (22) implemented for a first polarization state and a second optical modulator (23) implemented for a second polarization state that is orthogonal to the first polarization state; a photo detector (12) configured to optical-to-electrical convert the input optical signal or the output optical signal or both of the optical signals into an electric signal; and a drive signal generator (14) configured to generate a first drive signal that drives the first optical modulator and a second drive signal that drives the second optical modulator based on the electric signal generated by the photo detector.