Wideband reflector and bandpass filter by using a Ge subwavelength periodic membrane

Tian Sang; Tuo Cai; Xiaowei Zhang; Sanhong Ding; Shaohong Cai; Zhanshan Wang

doi:10.1117/12.888278

18 February 2011 Wideband reflector and bandpass filter by using a Ge subwavelength periodic membrane

Tian Sang, Tuo Cai, Xiaowei Zhang, Sanhong Ding, Shaohong Cai, Zhanshan Wang

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 79950W (2011) https://doi.org/10.1117/12.888278
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

Wideband reflector and bandpass filter are obtained by using a Ge subwavelength periodic membrane with the thickness kept constant at 3.20 μm. The strong refractive-index modulation of the Ge subwavelength periodic membrane yields increased bandwidth of the leaky mode resonances, thus the excitation of the leaky mode resonances TE_1,1, TE_2,1, and TE_3,0 may interact to form a broad reflection band or a transmission passband near λ=10.60 μm.

Citation Download Citation

Tian Sang, Tuo Cai, Xiaowei Zhang, Sanhong Ding, Shaohong Cai, and Zhanshan Wang "Wideband reflector and bandpass filter by using a Ge subwavelength periodic membrane", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79950W (18 February 2011); https://doi.org/10.1117/12.888278

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