1. Polarization‐independent liquid crystal‐based refractive index sensor.
- Author
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Yang, Zhiyong, Zhan, Tao, and Wu, Shin‐Tson
- Subjects
- *
REFRACTIVE index , *LIQUID crystals , *DISPLAY systems , *LIGHT sources , *DETECTORS , *SYSTEM integration - Abstract
A polarization‐independent refractive index (RI) sensor with a 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 RI of the surrounding medium is investigated through anisotropic rigorous coupled‐wave analysis. Such an 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. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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