Design and applications of silicon waveguide grating couplers

Xia Chen; Zhenzhou Cheng; Christy K. Y. Fung; Hon K. Tsang

doi:10.1117/12.907947

2 February 2012 Design and applications of silicon waveguide grating couplers

Xia Chen, Zhenzhou Cheng, Christy K. Y. Fung, Hon K. Tsang

Proceedings Volume 8266, Silicon Photonics VII; 82660I (2012) https://doi.org/10.1117/12.907947
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We review our recent work on waveguide grating couplers, including an apodized grating coupler with engineered coupling strength to achieve Gaussian-like output profile, which greatly improves the fiber-chip coupling efficiency. We will also discuss a new class of grating couplers involving the use of sub-wavelength nanostructures to engineer the optical properties. Effective medium theory can be used in the design of sub-wavelength structures, which, when properly engineered, can offer broadband coupling and polarization independence. Other applications of waveguide gratings, for example bi-wavelength two dimensional gratings coupler for (de-)multiplexing two different wavelengths, fiber-waveguide hybrid lasers and mid-infrared grating couplers on silicon-on-sapphire wafer will also be briefly discussed.

Citation Download Citation

Xia Chen, Zhenzhou Cheng, Christy K. Y. Fung, and Hon K. Tsang "Design and applications of silicon waveguide grating couplers", Proc. SPIE 8266, Silicon Photonics VII, 82660I (2 February 2012); https://doi.org/10.1117/12.907947

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