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Proceedings Paper

Taper-integrated multimode-interference based crossings for silicon wire waveguides
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Paper Abstract

Novel multimode-interference (MMI)-based crossings integrated with miniaturized tapers are numerically presented for Silicon wire waveguides. These miniature tapers function as field expanders to reduce transition loss between the input/output waveguide and the MMI region and the crosstalk in the crossing section. As a consequence, the lengths of MMI sections reduce to less than twice of the beat length. Using finite different time domain method, we demonstrate that the MMI-based waveguide crossing embedded in the quadratic tapers has the size of 5800x5800 nm2, the insertion loss of 0.15 dB and the crosstalk of -42 dB at the wavelength of 1550 nm and broad transmission spectrum ranging from 1500 nm to 1600 nm.

Paper Details

Date Published: 16 February 2010
PDF: 8 pages
Proc. SPIE 7606, Silicon Photonics V, 76061C (16 February 2010); doi: 10.1117/12.841544
Show Author Affiliations
Chia-Hsiang Chiu, National Chiao Tung Univ. (Taiwan)
Chyong-Hua Chen, National Chiao Tung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 7606:
Silicon Photonics V
Joel A. Kubby; Graham T. Reed, Editor(s)

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