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A compact photonic horizontal spot-size converter realized in silicon-on-insulator

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10 Author(s)
Luyssaert, B. ; Dept. of Inf. Technol., Ghent Univ.-IMEC, Gent, Belgium ; Vandersteegen, P. ; Taillaert, D. ; Dumon, P.
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We present a compact planar coupler connecting two optical waveguides with highly different widths. The coupler consists of various nonperiodic waveguide sections, whose dimensions are determined using a genetic optimization algorithm. Efficiencies that exceed those of the more conventional designs with similar lengths, like gradual linear tapers, were obtained in silicon-on-insulator using 248-nm-deep ultraviolet lithography.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 1 )

Date of Publication:

Jan. 2005

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