30 January 1990 Ion exchange stripe waveguides in LiNbO3 to cut-off switches
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Proceedings Volume 1085, Optical Fibres and Their Applications V; (1990); doi: 10.1117/12.952975
Event: Optical Fibers and Their Applications V, 1989, Warsaw, Poland
Abstract
The methods of fabrication of some (mono and multimodal) proton-exchanged stripe LiNbO3 waveguides are described, made on the X-cut substrates. An increase in the diffusion coefficient of the H+ ions was established in the area of the stripe waveguides with respect to that found in the slab waveguides. The material was chosen for a metalic masking layer used in the photolitographic processes. The proper time limit was found for the ionic exchange in which the stripe monomodal waveguides are obtained of a thickness securing a minimum energy necessary as to reveal the cut-off switching effect. The topography of the stripe structures was investigated by the diffraction method. The latter method is particularly suitable for the control of the aperture and deflection of the stripes from linearity as well as for the control of optical density of the waveguides themselves.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Roszko, I. Chojnacka, E. Skulska, E. Augusciuk, A. W. Domanski, "Ion exchange stripe waveguides in LiNbO3 to cut-off switches", Proc. SPIE 1085, Optical Fibres and Their Applications V, (30 January 1990); doi: 10.1117/12.952975; https://doi.org/10.1117/12.952975
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KEYWORDS
Waveguides

Diffusion

Wave propagation

Planar waveguides

Refractive index

Chemical species

Ion exchange

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