Study of thermo-optical tunable reflecting filter based on dual interference effect

Bing Zheng; Zheng Chen

doi:10.1117/12.252099

25 September 1996 Study of thermo-optical tunable reflecting filter based on dual interference effect

Bing Zheng, Zheng Chen

Proceedings Volume 2894, Detectors, Focal Plane Arrays, and Applications; (1996) https://doi.org/10.1117/12.252099
Event: Photonics China '96, 1996, Beijing, China

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.

Citation Download Citation

Bing Zheng and Zheng Chen "Study of thermo-optical tunable reflecting filter based on dual interference effect", Proc. SPIE 2894, Detectors, Focal Plane Arrays, and Applications, (25 September 1996); https://doi.org/10.1117/12.252099

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