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Authors: B. Luyssaert, P. Vandersteegen, D. Taillaert, P. Dumon, W. Bogaerts, P. Bienstman, D. Van Thourhout, V. Wiaux, S. Beckx, R. Baets
Title: A Compact Horizontal Spot-Size Converter Realized in Silicon-on-Insulator
Format: International Journal
Publication date: 1/2005
Journal/Conference/Book: IEEE Photonics Technology Letters
Editor/Publisher: IEEE, 
Volume(Issue): 17(1) p.73-75
DOI: 10.1109/lpt.2004.838655
Citations: 23 ( - last update: 21/7/2024)
15 (OpenCitations - last update: 3/5/2024)
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We prsent 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 length, like gradual linear tapers, were obtained in silicon-on-insulator using 248-nm-deep ultraviolet lithography.

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