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Proceedings Paper

Study of thermo-optical tunable reflecting filter based on dual interference effect
Author(s): Bing Zheng; Zheng Chen
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Paper Abstract

A novel tunable optical filter has been proposed and investigated here, which is a thin film-slab substrate combination system, operating on principle of Dual Interference Effect introduced first time. According to theoretical analysis, the reflectance for a specific wavelength varies periodically with the changing of refractive index of the slab substrate for a given thickness of film. Experimentally, the tested samples are fabricated by depositing approximately 90 nm SnO2 semiconductor film on 3 mm Na-glass substrate, the measured ratio of reflectances at operating wavelength 632.8 nm/670 nm is as high as 15 dB.

Paper Details

Date Published: 25 September 1996
PDF: 5 pages
Proc. SPIE 2894, Detectors, Focal Plane Arrays, and Applications, (25 September 1996); doi: 10.1117/12.252099
Show Author Affiliations
Bing Zheng, Univ. of Electronic Science and Technology (China)
Zheng Chen, Univ. of Electronic Science and Technology (China)

Published in SPIE Proceedings Vol. 2894:
Detectors, Focal Plane Arrays, and Applications
William G. D. Frederick; Junhong Su; Marc Wigdor, Editor(s)

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