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Study on A Novel Integrated Optical Proton Exchanged TM Pass Polarizers in LiNbO 3

Huang Hui Hu Hongzhang Liu Xijiu Xue Ting (Department of Applied Physics, Tianjin University, Open Laboratory of Photoelectronics and Information Engineering, National Ministry of Education, Tianjin 300072) Geng Fan (China Spaceflight Indust  
A new method to fabricate TM pass polarizers by introducing zig zag shaped proton exchanged regions adjacent to a Ti diffusion waveguide on X cut, Y propagation lithium niobate is presented. A two dimension BPM (Beam Propagation Method) has been used to analyse this new kind of polarizer. The performance of the device is shown to depend strongly on the geometrical shapes of the proton exchange regions and their distances to channel waveguide. Through optimizing the parameters, a perfect device have been realized, and a TE extinction of 23 dB has been obtained experimentally.
【Fund】: 国家自然科学基金!(19674039)
【CateGory Index】: TN25
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