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P‐126: Photo‐Controllable Multi‐Stable Liquid Crystal Optical Switch
Author(s) -
Wang ChunTa,
Wu YuehChi,
Lin TsungHsien
Publication year - 2014
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/j.2168-0159.2014.tb00385.x
Subject(s) - homeotropic alignment , dichroic glass , materials science , liquid crystal , optical switch , dichroic filter , optoelectronics , optics , doping , attenuation , wavelength , physics
This work demonstrates an optically switchable tristable optical switch that is based on the light–matter interactions of dichroic dyes, azo‐chiral and liquid crystal. Tristable attenuation, scattering, and transparent states can be achieved using the dichroic dye doped fingerprint, focal conic, and homeotropic textures, respectively. All states can stably exist for several hours, and be switched from one state to another through light‐induced isomerization effect of azo‐chiral. Such a multi‐stable optical switch exhibits easy switching, a desirable contrast ratio, and low power consumption. It therefore exhibits the potential to be utilized in practical portable information systems.