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Proceedings Paper

Photo-Induced Self-Condensation, A Technique For Fabricating Organic Lightguide Structures
Author(s): H. Franke; W. Heuer
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Paper Abstract

Planar lightguides have been fabricated from mixtures of the polymer PMMA with benzoin type photoinitiators. Using conventional UV-photolithography 2 dimensional refractive index patterns were recorded in the polymer films. Thickness and refractive index of the organic lightguides were determined by m-line spectroscopy. The achieved refractive index changes increased with increasing photoinitiator concentrations. For high concentrations (< 70 %) the film refractive index could be increased via UV exposure by Δn = 0.03. Thermal treatment at below 100°C caused the out diffusion of the unexposed photoinitiator and completion of the photochemically induced reaction in the exposed parts of the film. Thus refractive index patterns (Δn < 0.05) could be developed and fixed.

Paper Details

Date Published: 3 November 1986
PDF: 8 pages
Proc. SPIE 0651, Integrated Optical Circuit Engineering III, (3 November 1986); doi: 10.1117/12.938139
Show Author Affiliations
H. Franke, Universitat Osnabruck (Germany)
W. Heuer, Universitat Osnabruck (Germany)

Published in SPIE Proceedings Vol. 0651:
Integrated Optical Circuit Engineering III
Ralf Th. Kersten, Editor(s)

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