Silicon-Nanowire-Based Polarization Diversified CWDM Optical DeMUX Based on Delayed Interferometric Filters

We demonstrate a Si-wire polarization-diversified Coarse WDM DeMUX for high- density optical interconnects. The device consists of a hybrid mode conversion-type polarization splitter rotator and delayed interferometric DeMUX. The fabricated device exhibited low loss and polarization-dependent loss of <1.0 dB, suppressing crosstalk (<−20 dB).