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Design and realization of low losses chalcogenide AsxS1-x planar waveguides

A. A. POPESCU1,* , D. SAVASTRU1, S. MICLOS1

Affiliation

  1. National R&D Institute for Optoelectronics INOE 2000, Magurele, 077125, Romania

Abstract

Optical losses in planar waveguides are usually limited to several dB/cm that is a quite high value for practical application. In many cases the optical losses are due to light scattering on non-homogeneities rather than to material absorption. Numerical calculations for the waveguide modes show that the effective refractive index variations depend on the material and geometrical waveguide parameter and can be optimized in order to minimize the sensitivities. The optimized planar structure may be performed using a multilayer structure of AsxS1-x glasses with different compositions. Experimentally symmetrical planar waveguides were realized with losses less than 0,1 dB/cm. The three prism method was used for measurement of the low optical losses..

Keywords

Planar waveguides, Integrated optics, Chalcogenide glasses.

Submitted at: Feb. 22, 2011
Accepted at: March 16, 2011

Citation

A. A. POPESCU, D. SAVASTRU, S. MICLOS, Design and realization of low losses chalcogenide AsxS1-x planar waveguides, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 3, pp. 213-217 (2011)