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Compact silicon 2D asymmetric waveguide grating for wavelength triplexing

We designed and demonstrated a silicon 2D asymmetric waveguide grating with wavelength triplexing to offer very small-form factor for ready integration with other silicon photonic components. The grating fabricated with CMOS-compatible technology demonstrates wavelength triplexing capability (near 1310/1490/1550 nm) with minimum coupling loss of -5.7 dB. The 3 dB bandwidth for different wavelength bands is larger than 40 nm. These distinct attributes will bring compact, cost-effective optical transceivers a step closer towards market deployment to support advanced optical networks.