Broadband differential interference in a waveguide with a gradient refractive index distribution


  • Kazimierz Gut Department of Optoelectronics, Silesian University of Technology



waveguide interferometer, ion exchange, planar waveguide


The paper presents a model of a planar broadband differential waveguide interferometer with a gradient refractive index distribution. Its response to the change in the refractive index of the waveguide cover layer is presented. The analysis was performed for the wavelength range from 0.5um to 0.7um. The orthogonal TE0 and TM0 modes propagating in this wavelength range are considered. The influence of the coverage refractive index change on the output characteristics of the system is shown.

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How to Cite

K. Gut, “Broadband differential interference in a waveguide with a gradient refractive index distribution”, Photonics Lett. Pol., vol. 14, no. 3, pp. 53–55, Sep. 2022.