Demonstration of Crosstalk-Free WDM Demultiplexing on Si Nanowire PIC Controlled by Si CMOS ASIC

We demonstrate fully automatic suppression of crosstalk, inevitable in WDM demultiplexers on Si nanowire PIC. This is realized with a low-cost CMOS ASIC dedicatedly designed for low-power control of our proposed CAT demultiplexer. It is shown to have zero OSNR penalty even under continuous control required to cancel dynamic environmental change.