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Optical Engineering

Holographic diffuser for diffuse infrared wireless home networking
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Paper Abstract

We present the design and fabrication of holographic diffusers for diffuse IR wireless home networking. Three optimization methods—error reduction, input-output, and simulated annealing—are studied and used to calculate the computer-generated holograms, which are employed to fabricate the holographic diffusers. To evaluate the performance of the computer-generated holograms generated using these techniques, a cost function is defined and calculated for each hologram. The computer-generated hologram 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 computer-generated hologram onto a piece of quartz with a pixel size of 14×14 μm using a laser writing system is achieved, and the diffraction pattern of the diffuser is demonstrated.

Paper Details

Date Published: 1 February 2003
PDF: 8 pages
Opt. Eng. 42(2) doi: 10.1117/1.1534592
Published in: Optical Engineering Volume 42, Issue 2
Show Author Affiliations
Jianping Yao, Univ. of Ottawa (Canada)
George C. K. Chen, Nanyang Technological Univ. (Singapore)

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