Liquid crystal infiltrated waveguide with distributed Bragg reflectors

Dong Po Cai, Hung Yi Pan, Ji Fang Tsai, Hua Kung Chiu, Shan Chi Nian, Sheng Hsiung Chang, Chii Chang Chen, Chien Chieh Lee

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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 Vrms, 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 Vrms.

Original languageEnglish
Pages (from-to)1471-1477
Number of pages7
JournalOptical Materials Express
Issue number8
StatePublished - 1 Dec 2011


Dive into the research topics of 'Liquid crystal infiltrated waveguide with distributed Bragg reflectors'. Together they form a unique fingerprint.

Cite this