20 September 1996 Investigation of liquid crystal switch on integrated optics with rib waveguides
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In consideration of better confinement of optical field and integration with practical communication network of optical fiber, we proposed a novel vertical (Delta) (kappa) directional coupler switch with inverted rib waveguides made of nematic liquid crystals (NLCs). Because of the large birefringence of LC's, a very short switching length, about 60 micrometers , is obtained; furthermore, the high extinction ratio, 25.73 dB, can be achieved in the 3D switch.
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Ming-Hsuan Chang, Ming-Hsuan Chang, Wei-Ching Chuang, Wei-Ching Chuang, Jang-Jeng Liang, Jang-Jeng Liang, } "Investigation of liquid crystal switch on integrated optics with rib waveguides", Proc. SPIE 2893, Fiber Optic Components and Optical Communication, (20 September 1996); doi: 10.1117/12.251993; https://doi.org/10.1117/12.251993

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