All-optical angular sensing based on holography multiplexing with spherical waves

An all-optical angular sensing system based on volume holography is proposed and demonstrated, where a divergent spherical wave is the reference and reading beam for writing and testing, respectively. Under the paraxial condition, analysis shows that angular selectivity is nearly independent of the...

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Bibliographic Details
Published in:Optical Engineering 2002-11, Vol.41 (11), p.2809-2813
Main Authors: Sun, Ching-Cherng, Hsu, Chih-Yuan, Ouyang, Yuh, Su, Wei-Chia, Chiou, Arthur E. T
Format: Article
Language:English
Subjects:
data storage
holography
multiplexing
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Summary:An all-optical angular sensing system based on volume holography is proposed and demonstrated, where a divergent spherical wave is the reference and reading beam for writing and testing, respectively. Under the paraxial condition, analysis shows that angular selectivity is nearly independent of the distance between the hologram and the light source. By choosing an appropriate distance, the entire energy of the source (e.g., an LED) can be employed while maintaining the same resolution for precise angular sensing. ©
ISSN:0091-3286
1560-2303
DOI:10.1117/1.1511748