Abstract
This work proposes a tunable reflective guided-mode resonant (GMR) filter that incorporates a 90° twisted nematic liquid crystal (TNLC). The GMR grating acts as an optical resonator that reflects strongly at the resonance wavelength and as an alignment layer for LC. The 90° TNLC functions as an achromic polarization rotator that alters the polarization of incident light. The resonance wavelength and reflectance of such a filter can be controlled by setting the angle of incidence and driving the 90° TNLC, respectively. The designed filter exhibits a very large spectral shift in resonance wavelength from 710 to 430 nm, which covers the entire visible spectrum. The transmittance can be tuned to within 10 V at various resonance wavelengths. The hybrid GMR - LC filter is compact, has a simple design, and is easy to fabricated. It can therefore be used in practical applications.
© 2017 Optical Society of America
PDF ArticleMore Like This
Shin-tson wu, U. Efron, J. Grinberg, and Laverne d. Hess
FI5 Conference on Lasers and Electro-Optics (CLEO:S&I) 1984
Tzu-Chieh Kao, Jia-Jin Lin, Chia-Wei Huang, and Yung-Jr Hung
JTu5A.130 CLEO: Applications and Technology (CLEO:A&T) 2017
Boonrasri Seeleang, Chamras Promptmas, Sakoolkan Boonruang, Waleed S. Mohammed, and Romuald Jolivot
s1828 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2017