We present the use of a micromirror to dynamically improve an optical wireless communiciations 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.
Title
Directional visible light communication signal enhancement using a varifocal micromirror with four degrees of freedom
Published in
Fifteenth International Conference On Solid State Lighting And Led-Based Illumination Systems
Pagination
11
Series
Proceedings of SPIE
Volume
9954
Pages
99540C
Conference
15th International Conference on Solid State Lighting and LED-Based Illumination Systems, San Diego, CA, AUG 31, 2016
Date
2016
Publisher
Bellingham, Spie-Int Soc Optical Engineering
ISSN
0277-786X
ISBN
978-1-5106-0299-1
978-1-5106-0300-4
Record creation date
2017-01-24