16 December 2014 Technological aspects of producing gradient planar waveguides for LPWG structures
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Proceedings Volume 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014; 92900F (2014) https://doi.org/10.1117/12.2074903
Event: Symposium on Photonics Applications in Astronomy, Communications, Industry and High-Energy Physics Experiments, 2014, Warsaw, Poland
Abstract
This paper presents the technological aspect of producing gradient planar waveguides for Long Period Grating Waveguide structures (LPWG). Such waveguides are produced by the Ag+↔Na+ ion exchange method in Pyrex glass. By a sequence of ion exchange technological processes the refractive profiles of waveguides (multimode area) can be produced in this glass, so that the chosen corrugation period allows the resonant coupling of power conducted in the TE0 fundamental mode to the modes of higher order. On the basis of the determined temperature dependences of diffusion coefficients of exchanged ions the conditions of preliminary diffusion, heating and secondary diffusion (ultimately giving the required refractive index profile of the waveguide) have been determined. The technological processes mentioned above have been realized. After each of these processes the measurements of effective refractive indices of modes have been carried out. A comparison of the values and of the theoretical results has been made as well.
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Tomasz Kotyczka, Roman Rogoziński, "Technological aspects of producing gradient planar waveguides for LPWG structures", Proc. SPIE 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014, 92900F (16 December 2014); doi: 10.1117/12.2074903; https://doi.org/10.1117/12.2074903
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