Tunable flat-top polarization interleaver filters based on cascaded film cavity structure

Juan Zhang; Shuai Yu; Xue Li; Sen Guo

doi:10.1117/12.887619

19 January 2011 Tunable flat-top polarization interleaver filters based on cascaded film cavity structure

Juan Zhang, Shuai Yu, Xue Li, Sen Guo

Proceedings Volume 7986, Passive Components and Fiber-Based Devices VII; 79860P (2011) https://doi.org/10.1117/12.887619
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

Abstract

Starting from the theory of one-dimensional photonic crystal, a flat-top polarization interleaver filter composed of cascaded thin-film glass cavities is proposed. A detailed design example with three cascaded thin-film glass cavities is given in the paper. The minimum transmissivity of P polarized light at passband is higher than 99.6% and the maximum transmissivity of S polarized light is about 0.1%. The center-frequencies of the transmissivity of P polarized light accord with the ITU standard. The proposed interleaver filter not only has the characteristics of very simple structure, easy to accomplish, but also has high transmittance for P polarized light and good cut-off characteristic for S polarized light. When rotating the cascaded thin-film glass cavities in the horizontal plane with small angle, the filter has the center-frequency tunability characteristic as well.

Citation Download Citation

Juan Zhang, Shuai Yu, Xue Li, and Sen Guo "Tunable flat-top polarization interleaver filters based on cascaded film cavity structure", Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 79860P (19 January 2011); https://doi.org/10.1117/12.887619

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KEYWORDS

Transmittance

Optical filters

Glasses

Thin films

Dielectric polarization

Polarization

Dielectrics

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