Numerical analysis of the broadband interferometric sensor in the planar gradient-step index configuration


  • Marek Blahut Silesian University of Technology



Integrated optics, optical sensors, planar waveguides


In the paper the model of an optical sensor based on a two-mode interference in a planar gradient-step index configuration is presented. The analyzed structure consists of a single-mode gradient index waveguide, made by Ag+-Na+ ion exchange, which is partially covered by a step-index SU-8 polymer layer. This step and gradient index structure forms a two-mode waveguide which is excited by a broadband light source from a selected spectral range. The refractive index variation of measured external surrounding affects the modal properties of multimode waveguide and the spectral field distribution at the output of the structure.

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Author Biography

Marek Blahut, Silesian University of Technology

Department of Optoelectronics




How to Cite

M. Blahut, “Numerical analysis of the broadband interferometric sensor in the planar gradient-step index configuration”, Photonics Lett. Pol., vol. 14, no. 2, pp. 22–24, Jul. 2022.