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Proceedings Paper

Optical interconnections using photorefractive segmented waveguides
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Paper Abstract

An optical interconnection technique using photorefractive segmented waveguides is reviewed. The photorefractive segmented waveguide consists of many localized high refractive-index regions that are fabricated by illuminating a focused laser beam. The waveguide interconnections can be adaptive by changing the spatial arrangement of the high refractive-index regions. Fabrication results of straight, curved, and Y-branch waveguides are presented. In the straight waveguides, the transmitted power of a guided beam as a function of the period of segmentation and the dark decay time are measured. The tolerance due to fabrication error is also investigated experimentally. Waveguide structures can be optically modified to implement adaptive interconnections. As an example, a curved structure was transformed into a Y-branch structure by optical illumination. We numerically show that a novel structure of a segmented waveguide can work as a waveguide, where average refractive index of the core is the same as that of surrounding material.

Paper Details

Date Published: 1 October 1999
PDF: 9 pages
Proc. SPIE 3804, Algorithms, Devices, and Systems for Optical Information Processing III, (1 October 1999); doi: 10.1117/12.363975
Show Author Affiliations
Kazuo Kuroda, Univ. of Tokyo (Japan)
Osamu Matoba, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 3804:
Algorithms, Devices, and Systems for Optical Information Processing III
Bahram Javidi; Demetri Psaltis, Editor(s)

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