Simulated interferograms for the LC wedge at L = 20 μm by considering the contribution of birefringence dispersion. Inset shows the magnified view of the interferograms along with the position of the peak point, and centroid points of the initial and final signals.

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Schematic diagram of the experimental setup for LC wedge-based PLCI...

Simulated interferograms for the LC wedge at L = 20 μm by considering...

(a) Variation in effective birefringence with applied voltage at...

(a) Normalized interferogram obtained from experiment and simulation...

Extended Centroid Position Method in Liquid Crystal Based Interrogation System for Electric Field Modulated Fabry-Perot Sensing

Article

Full-text available

Nov 2023

Susanta Chakraborty
Aloka Sinha

A polarized low-coherence interferometer (PLCI) based on a liquid crystal (LC) wedge is designed and an associated demodulation method encompassing the tunability feature is proposed for tunable, standalone optical sensing. The application of an electric field to the LC material effectively decreases the birefringence value and the related dispersi...