Polarization-dependent reflective color filter incorporating an embedded silicon grating

Yu Gu; Hong Ye; Shangliang Wu; Yan Ye; Linsen Chen

doi:10.1117/12.2515583

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25 October 2018 Polarization-dependent reflective color filter incorporating an embedded silicon grating

Yu Gu, Hong Ye, Shangliang Wu, Yan Ye, Linsen Chen

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Proceedings Volume 10823, Nanophotonics and Micro/Nano Optics IV; 108231I (2018) https://doi.org/10.1117/12.2515583
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

A reflective color filter showing polarization dependent is proposed, where on a SiO₂ substrate, a Si-grating is embedded inside a dielectric Si₃N₄ overlay. By varying the period of the grating, cyan, magenta and yellow (CMY) colors are gained for the transverse electric (TE) polarized incidence. With the polarization of incident light changed from TE polarization to transverse magnetic (TM) polarization, the structure’s reflective color varies accordingly. Therefore, the proposed structure has application prospects in the field of anti-counterfeiting and color display.

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Yu Gu, Hong Ye, Shangliang Wu, Yan Ye, and Linsen Chen "Polarization-dependent reflective color filter incorporating an embedded silicon grating", Proc. SPIE 10823, Nanophotonics and Micro/Nano Optics IV, 108231I (25 October 2018); https://doi.org/10.1117/12.2515583

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