Title :
Hollow waveguide modulators by infiltrating liquid crystal
Author :
Cai, Dong-Po ; Nien, Shan-Chi ; Hsu, Kuei-Chu ; Chiu, Hua-Kung ; Chen, Chii-Chang ; Lee, Chien-Chieh
Author_Institution :
Dept. of Opt. & Photonics, Nat. Central Univ., Jhongli, Taiwan
Abstract :
In this work, we fabricate the liquid crystal waveguides by infiltrating liquid crystal E7 into hollow waveguides (HWGs) with SiO2 cladding layer. The reorientation of the high susceptibility of liquid crystals molecular is achieved by applying the external fields to change the optical characterization of the liquid crystal waveguides. By applying external voltage to SiO2-cladded HWGs, the output intensity decreases with the voltage. The devices can serve as an electrically tunable liquid crystal switch with over 30dB attenuation at 4~5 Vpp.
Keywords :
claddings; liquid crystal devices; optical fabrication; optical modulation; optical susceptibility; optical switches; optical tuning; optical waveguides; silicon compounds; SiO2; cladding layer; electrically tunable liquid crystal switch; hollow waveguide modulators; liquid crystal infiltration; liquid crystal waveguides; molecular reorientation; optical characterization; susceptibility; Indexes; Liquid waveguides; Optical device fabrication; Optical fibers; Optical reflection; HWGs; electrically tunable; liquid crystal; optical switch;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682621
