Si-SiN-SiN Tri-Layer Strictly Non-blocking 8×8 Microring-Based Optical Switch

We report a Si-SiN-SiN tri-layer switch-and-select 8×8 optical switch with 128 thermally-driven microring-resonators. Crosstalk ratio and on-chip loss are measured in the range of -33.2 to -50.8dB and 2.1 to 10.5dB, respectively, with >70GHz passband.