A unique all-optic switch based on an innovatively designed liquid crystal waveguide

Sung-Hyun Nam; Wei-Hung Su; Jesus Chavez; Shizhuo Yin

doi:10.1117/12.513912

21 October 2003 A unique all-optic switch based on an innovatively designed liquid crystal waveguide

Sung-Hyun Nam, Wei-Hung Su, Jesus Chavez, Shizhuo Yin

Proceedings Volume 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX; (2003) https://doi.org/10.1117/12.513912
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

A unique, all-optic switch based on an innovatively designed planar lightwave circuit (PLC) is presented in this paper. The switching function is achieved by using ultra large birefringence of nematic liquid crystals (NLC) filled at the trench of waveguides. The trench at the crossing forms a waveguide mirror or a matching medium when extraordinary and ordinary refractive indices of NLC are employed, respectively. The major advantages of our unique design are: (1) the limitation that refractive index of liquid crystal must be less than that of waveguide material itself is eliminated so that conventional NCL material such as E7 can be used; (2) it is a self aligned fabrication process that alleviates the tight tolerance of later tilt error; (3) the design is thermally stable. The successful fabrication of this unqiue switch could result in an enabling element for the next generation all-optic networks.

Citation Download Citation

Sung-Hyun Nam, Wei-Hung Su, Jesus Chavez, and Shizhuo Yin "A unique all-optic switch based on an innovatively designed liquid crystal waveguide", Proc. SPIE 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX, (21 October 2003); https://doi.org/10.1117/12.513912

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