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Proceedings Paper

Modified double ion-exchange method for the fabrication of phase gratings in glass waveguides
Author(s): Jyrki Saarinen; Seppo Honkanen; Guang-Wen Zhang; S. Iraj Najafi
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Paper Abstract

We demonstrate improvements to the double ion-exchange process proposed for the fabrication of synthetic diffractive optical elements in glass waveguides. In this process a potassium slab waveguide is first fabricated. Then the diffractive element is made with silver ion exchange. In the modified process a short silver ion exchange is used in the second process step and the double ion-exchanged waveguide remains single mode. The undesired undiffracted light can be nearly totally eliminated. The mode profile of the potassium and double ion-exchanged waveguides are very close to each other resulting in low coupling loss between these two waveguide regions.

Paper Details

Date Published: 28 July 1994
PDF: 6 pages
Proc. SPIE 2213, Nanofabrication Technologies and Device Integration, (28 July 1994); doi: 10.1117/12.180952
Show Author Affiliations
Jyrki Saarinen, Helsinki Univ. of Technology (Finland)
Seppo Honkanen, Helsinki Univ. of Technology (Finland) and Ecole Polytechnique de Montreal (Canada)
Guang-Wen Zhang, Ecole Polytechnique de Montreal (Canada)
S. Iraj Najafi, Ecole Polytechnique de Montreal (Canada)

Published in SPIE Proceedings Vol. 2213:
Nanofabrication Technologies and Device Integration
Wolfgang Karthe, Editor(s)

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