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Liquid crystals for optical modulation and sensing applications
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Paper Abstract

Photo-addressed liquid crystal media allow realizing optical phase detection based on self-adaptive holographic processes. Examples are reported of adaptive holographic systems based on optically addressed liquid crystal spatial light modulators. Owing to the physical mechanisms involved, such liquid crystal based adaptive interferometers adapt to slow phase variations, thus filtering out low frequency noise while transmitting the phase modulations at higher frequencies. This method permits measuring small phase modulations in noisy environments and with distorted and speckled wavefronts. The basic principles of the adaptive interferometer are presented, then, the association with an optical fiber is shown to realize a new class of distributed optical fiber sensors.

Paper Details

Date Published: 23 September 2016
PDF: 8 pages
Proc. SPIE 9940, Liquid Crystals XX, 99400N (23 September 2016); doi: 10.1117/12.2237579
Show Author Affiliations
S. Residori, Institut Non Linéaire de Nice Sophia Antipolis, Univ. de Nice-Sophia Antipolis, CNRS (France)
U. Bortolozzo, Institut Non Linéaire de Nice Sophia Antipolis, Univ. de Nice-Sophia Antipolis, CNRS (France)
A. Peigné, Thales Underwater System (France)
S. Molin, Thales Research and Technology (France)
P. Nouchi, Thales Research and Technology (France)
D. Dolfi, Thales Research and Technology (France)
J. P. Huignard, Jphopto (France)


Published in SPIE Proceedings Vol. 9940:
Liquid Crystals XX
Iam Choon Khoo, Editor(s)

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