Low-Loss Silicon Nitride AWG Demultiplexer Heterogeneously Integrated With Hybrid III–V/Silicon Photodetectors

Molly Piels, Jared F. Bauters, Michael L. Davenport, Martijn J. R. Heck, John E. Bowers
2014 Journal of Lightwave Technology  
A unique and novel platform that combines III-V and silicon photonic components with ultra-low loss silicon nitride waveguides for monolithic integration of novel photonic circuits is presented. Successful (proof-of-principle) integration of eight hybrid III-V/silicon photodetectors and an arrayed waveguide grating is shown. The InGaAs photodiodes in this platform had average fiber-coupled responsivity of 0.36 A/W at 1550 nm, 30 GHz electrical bandwidth, and operated up to 50 Gb/s. The AWG had
more » ... n insertion loss of 0.85 dB and adjacent-channel cross-talk less than −38 dB.
doi:10.1109/jlt.2013.2286320 fatcat:so53wf66bvgshkjriprtho53om