Liquid crystal infiltrated waveguide with distributed Bragg reflectors

The electrically tunable band-pass filter in the visible light region is demonstrated by the liquid-crystal infiltrated waveguide formed by the distributed Bragg reflectors with the length of 3 mm. As the white light source is launched in the waveguide, by applying the external voltages from 0 to 30...

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Bibliographic Details
Published inOptical materials express Vol. 1; no. 8; pp. 1471 - 1477
Main Authors Cai, Dong-Po, Pan, Hung-Yi, Tsai, Ji-Fang, Chiu, Hua-Kung, Nian, Shan-Chi, Chang, Sheng Hsiung, Chen, Chii-Chang, Lee, Chien-Chieh
Format Journal Article
LanguageEnglish
Published 01.12.2011
Subjects
Attenuation
Bandpass filters
Bragg reflectors
Color
Electric potential
Voltage
Waveguides
White light
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Summary:The electrically tunable band-pass filter in the visible light region is demonstrated by the liquid-crystal infiltrated waveguide formed by the distributed Bragg reflectors with the length of 3 mm. As the white light source is launched in the waveguide, by applying the external voltages from 0 to 30 V sub(rms), the dynamic control of filter characteristics can be achieved to tune the color of the output light from white light to red, yellow or green. The intensity of the output light can also be attenuated by applying the voltage. The 25 dB attenuation can be achieved as the applied voltage is as low as 9 V sub(rms).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:2159-3930
2159-3930
DOI:10.1364/OME.1.001471