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Proceedings Paper

Graded-effective-index waveguiding structures fabricated with laser processing
Author(s): Mark N. Ruberto; Robert Scarmozzino; Alan Eli Willner; Dragan V. Podlesnik; Richard M. Osgood Jr.
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Paper Abstract

The technique of laser direct-writing was used to fabricate low-loss, rib-like waveguides on GaAs/A1GaAs material. Since this is a inaskless fabrication process, laser-etched structures such as bends, tapers, and Y-branches are readily demonstrated. The ability to smoothly control the etch depth, and thus the effective index of refraction across the wafer, was used to make a compact directional coupler. Finally, the reduction of losses in waveguide tapers and bends by grading the effective index will be discussed.

Paper Details

Date Published: 1 July 1990
PDF: 20 pages
Proc. SPIE 1215, Digital Optical Computing II, (1 July 1990); doi: 10.1117/12.18098
Show Author Affiliations
Mark N. Ruberto, Columbia Univ. (United States)
Robert Scarmozzino, Columbia Univ. (United States)
Alan Eli Willner, Columbia Univ. (United States)
Dragan V. Podlesnik, Columbia Univ. (United States)
Richard M. Osgood Jr., Columbia Univ. (United States)

Published in SPIE Proceedings Vol. 1215:
Digital Optical Computing II
Raymond Arrathoon, Editor(s)

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