POLARIZATION MODE DISPERSION COMPENSATING APPARATUS

摘要

PURPOSE: A polarization mode dispersion compensating apparatus is provided to dynamically compensate polarization mode dispersion by using a polarization-maintenance fiber wound at a polarization splitter and a piezoelectric transducer. CONSTITUTION: A polarization mode dispersion compensating apparatus is provided with an optical switch(120) for switching an optical signal, a polarization controller(130) for maintaining the modulated optical signal transmitted from the optical switch a constant polarization state, a polarization-mode dispersion compensator(140) for compensating the polarization mode dispersion of the optical signal inputted from the polarization controller, and an optical power splitter(150) for preventing the polarization variation of the optical signal transmitted from the polarization-mode dispersion compensator. The polarization mode dispersion compensating apparatus further includes a differential group delay measuring unit(160) and a compensation controller(170).