Directional visible light communication signal enhancement using a varifocal micromirror with four degrees of freedom

Jessica Morrison; Michael Rahaim; Yun Miao; Matthias Imboden; Thomas D. C. Little; Valencia Koomson; David J. Bishop

doi:10.1117/12.2237736

7 September 2016 Directional visible light communication signal enhancement using a varifocal micromirror with four degrees of freedom

Jessica Morrison, Michael Rahaim, Yun Miao, Matthias Imboden, Thomas D. C. Little, Valencia Koomson, David J. Bishop

Author Affiliations +

Proceedings Volume 9954, Fifteenth International Conference on Solid State Lighting and LED-based Illumination Systems; 99540C (2016) https://doi.org/10.1117/12.2237736
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

We present the use of a micromirror to dynamically improve an optical wireless communications link. The signal-to-noise ratio (SNR) is improved by directing the output of a 675 nm laser diode modulated at 10 MHz toward a receiver and by varying the divergence of the output beam using a varifocal, tip-tilt-piston micromirror. The SNR has a dynamic range of 30 dB for a diffuse source, all by optimizing the overall shape and direction of the mirror.

Conference Presentation

Citation Download Citation

Jessica Morrison, Michael Rahaim, Yun Miao, Matthias Imboden, Thomas D. C. Little, Valencia Koomson, and David J. Bishop "Directional visible light communication signal enhancement using a varifocal micromirror with four degrees of freedom", Proc. SPIE 9954, Fifteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 99540C (7 September 2016); https://doi.org/10.1117/12.2237736

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