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56‐2: Distinguished Student Paper: Polarization‐Independent liquid‐Crystal‐Based Refractive Index Sensor
Author(s) -
Yang Zhiyong,
Zhan Tao,
Wu Shin-Tson
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14799
Subject(s) - refractive index , polarization (electrochemistry) , wavelength , grating , optics , materials science , anisotropy , liquid crystal , optoelectronics , physics , chemistry
A polarization independent refractive index (RI) sensor with a RI sensitivity of 50 nm/RIU is demonstrated. The proposed RI sensor simply consists of a liquid crystal (LC) polymeric polarization grating film and one glass substrate. The wavelength shift over the refractive index of surrounding medium is investigated through anisotropic rigorous coupled‐wave analysis. Such a LC‐based polarization independent RI sensor not only enables the usage of an unpolarized light source but also manifests a high sensitivity, offering great potential for the integration with display systems.