Optical phased array using high-contrast grating all-pass filters for fast beam steering

Weijian Yang; Tianbo Sun; Yi Rao; Trevor Chan; Mischa Megens; Byung-Wook Yoo; David A. Horsley; Ming C. Wu; Connie J. Chang-Hasnain

doi:10.1117/12.2004756

15 March 2013 Optical phased array using high-contrast grating all-pass filters for fast beam steering

Weijian Yang, Tianbo Sun, Yi Rao, Trevor Chan, Mischa Megens, Byung-Wook Yoo, David A. Horsley, Ming C. Wu, Connie J. Chang-Hasnain

Author Affiliations +

Proceedings Volume 8633, High Contrast Metastructures II; 86330G (2013) https://doi.org/10.1117/12.2004756
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

A novel 8x8 optical phased array based on high-contrast grating (HCG) all-pass filters (APFs) is experimentally demonstrated with high speed beam steering. Highly efficient phase tuning is achieved by micro-electro-mechanical actuation of the HCG to tune the cavity length of the APFs. Using APF phase-shifters allows a large phase shift with an actuation range of only tens of nanometers. The ultrathin HCG further ensures a high tuning speed (0.626 MHz). Both one-dimensional and two-dimensional HCGs are demonstrated as the actuation mirrors of the APF arrays with high beam steering performance.

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Weijian Yang, Tianbo Sun, Yi Rao, Trevor Chan, Mischa Megens, Byung-Wook Yoo, David A. Horsley, Ming C. Wu, and Connie J. Chang-Hasnain "Optical phased array using high-contrast grating all-pass filters for fast beam steering", Proc. SPIE 8633, High Contrast Metastructures II, 86330G (15 March 2013); https://doi.org/10.1117/12.2004756

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