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Proceedings Paper

Design and fabrication of holographic diffuser for diffuse infrared wireless home networking
Author(s): Jianping Yao; Tiong Aik Koh; Oh Kian Tat; George C. K. Chen; Yee-Loy Lam; Tuan-Kay Lim
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Paper Abstract

This paper reports the design and fabrication of holographic diffusers for diffuse infrared wireless home networking. Three optimization methods -- error reduction, input-output and simulated annealing, are employed to calculate the computer- generated holograms (CGHs), which are used to fabricate the holographic diffusers. To evaluate the performance of the CGHs generated using the different techniques, a cost function is defined and calculated for each hologram. The CGH generated from the simulated annealing is found to have the best output compared to the other two techniques. The diffusers are verified by displaying them onto a spatial light modulator. The fabrication of the CGH onto a piece of quartz with a pixel size of 14 micrometers X 14 micrometers using a laser writing system is also achieved.

Paper Details

Date Published: 29 October 2001
PDF: 12 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446605
Show Author Affiliations
Jianping Yao, Nanyang Technological Univ. (Canada)
Tiong Aik Koh, Nanyang Technological Univ. (Singapore)
Oh Kian Tat, Nanyang Technological Univ. (Singapore)
George C. K. Chen, Nanyang Technological Univ. (Singapore)
Yee-Loy Lam, Nanyang Technological Univ. (United States)
Tuan-Kay Lim, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications

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