12 May 2014 Design and characterization of composite planar polarimetric interferometer
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Proceedings Volume 9228, Optical Fibers and Their Applications 2014; 92280E (2014) https://doi.org/10.1117/12.2065419
Event: 15th Conference on Optical Fibers and Their Applications, 2014, Lipowy Most, Poland
This paper presents the design and theoretical characterization of a composite uniform-gradient planar waveguide polarimetric interferometer. Presented structure is composed of an Ag+↔Na+ ion-exchange based waveguide formed in Borosilicate 33 glass substrate and a uniform, sol-gel based, silica-titania film. Characteristics of homogeneous sensitivity difference for TE0-TM0, TE0-TE1 and TM0-TM1 modes in function of the uniform film refractive index and the gradient waveguide refractive index profile are given. Because thermal annealing is an inseparable part of the sol-gel process, the gradient index waveguide is subjected to a rediffusion process. The original refractive index profile is flattened. It was shown that a presence of the gradient waveguide increases sensitivity differences over values which can be obtained for single layer uniform silica-titania waveguides. Moreover, it was shown that a range of uniform film thickness values, for which sensitivity difference of the composite structure is maximized, is downshifted to a range which can be much easier obtained with a sol-gel process.
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Cuma Tyszkiewicz, Cuma Tyszkiewicz, Paweł Karasiński, Paweł Karasiński, Roman Rogoziński, Roman Rogoziński, Michał Szponik, Michał Szponik, "Design and characterization of composite planar polarimetric interferometer", Proc. SPIE 9228, Optical Fibers and Their Applications 2014, 92280E (12 May 2014); doi: 10.1117/12.2065419; https://doi.org/10.1117/12.2065419

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