Improving the electric field sensing capabilities of the long-period fiber grating coated with a liquid crystal layer

Optics Express
Aleksandra CzaplaRoman Dąbrowski

Abstract

The hybrid liquid crystal long-period fiber grating structure presented here uses the 1702 liquid crystal as a thin layer on the bare long-period fiber grating. To achieve the highest long-period fiber grating sensitivity to the liquid crystal layer presence, a UV-induced host grating, with a relatively short period of 226.8 μm, was chosen. This design makes it possible to couple light from the propagating core mode to a cladding mode at a wavelength near the phase-matching turning point. This phenomenon is exploited here for the first time to measure the thermal and electric field responses of the liquid crystal long-period fiber grating structure. All experimental results achieved in this work are supported by theoretical analysis.

References

Apr 20, 2012·Optics Express·Maria KonstantakiStavros Pissadakis
Apr 23, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Kazuki IwabataKengo Sakaguchi
Jan 24, 2014·TheScientificWorldJournal·G Rego
Jul 30, 2014·Biosensors & Bioelectronics·Ewa BrzozowskaWojtek J Bock
Aug 15, 2014·Optics Letters·Daniel BudaszewskiHoi-Sing Kwok

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Citations

Jan 23, 2020·Physical Review. E·Paul A BrownDaniel Gunlycke
Oct 20, 2017·Applied Optics·Igor GoncharenkoVitaly Reabtsev

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