An Experimental Study on Polarization Mode Dispersion Compensation Technique for a Monolithic CMOS-Integrated Silicon Photonics Transceiver
摘要
In this work, we have experimentally validated the performance of a photonic integrated circuit designed to compensate for the Differential Group Delay (DGD) between the outputs of a Polarization Splitter and Rotator (PSR) element. The delay compensation has been provided using the optical path length introduced by a silicon waveguide of appropriate length along the TM-TE output arm of the PSR. Measurement results are in close agreement with simulation results, indicating that the compensated circuit shows a reduction in DGD to below 1 ps from the uncompensated value of about 5.2 ps. This reduction in differential delay of a PSR reduces intersymbol interference and provides better Optical Modulation Amplitude (OMA) for high- speed photonic interconnects beyond 100 Gbps in the O-band using the monolithic Silicon Photonics platform.