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Proceedings Paper

Homogenization of power intensity based on micro lens array in optical wireless communication systems
Author(s): Xin Mu; Zixian Wei; Sailong Wu; Zhenmin Chen; Ying Dong; H. Y. Fu
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Paper Abstract

For systems based on array source, owing to discrete single sources in the array, variation in power intensity can usually be detected as the receiving end moves. Although uniform illumination in lighting system has been widely investigated, its implemented light sources are commonly LEDs with Lambertian distribution. We further study an optical design applied for optical wireless communication system with VCSEL in this article. The optical system mainly consists of collimating lens and micro lens array to homogenize power intensity of the communication system based on VCSEL array source which has a Gaussian distribution. Our proposed scheme was verified with commercial optical design software Zemax. The simulation result shows that illumination uniformity can reach up to 91% after passing through this optical system, which can fulfill the requirements of high power uniformity in practical applications. The homogenization of power intensity solves the issue of signal power variation at the moving receiver end in optical wireless communication system, which guarantees stable communication link and robust system performance.

Paper Details

Date Published: 14 February 2019
PDF: 6 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110481N (14 February 2019); doi: 10.1117/12.2522045
Show Author Affiliations
Xin Mu, Tsinghua-Berkeley Shenzhen Institute (China)
Zixian Wei, Tsinghua-Berkeley Shenzhen Institute (China)
Sailong Wu, Tsinghua-Berkeley Shenzhen Institute (China)
Zhenmin Chen, Tsinghua-Berkeley Shenzhen Institute (China)
Ying Dong, Tsinghua Univ. (China)
H. Y. Fu, Tsinghua-Berkeley Shenzhen Institute (China)

Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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