0

Multi-layer Silicon Nitride-On-Silicon Polarization-Independent Grating Couplers

Jason C C Mak, Wesley D Sacher, Huang Ying, Xianshu Luo, Patrick Guo-Qiang Lo, Joyce K S Poon

Opt Express. 2018 Nov 12;26(23):30623-30633.

PMID: 30469956

Abstract:

A polarization-independent grating coupler is proposed and demonstrated in a 3-layer silicon nitride-on-silicon photonic platform. Polarization independent coupling was made possible by the supermodes and added degrees of geometric freedom unique to the 3-layer photonic platform. The grating was designed via optimization algorithms, and the simulated peak coupling efficiency was -2.1 dB with a 1 dB polarization dependent loss (PDL) bandwidth of 69 nm. The fabricated grating couplers had a peak coupling efficiency of -4.8 dB with 1 dB PDL bandwidth of over 100 nm.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP12033895 Silicon nitride Silicon nitride 12033-89-5 Price
qrcode