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Opt Lett. 2007 Oct 1;32(19):2801-3.

Low-loss, low-cross-talk crossings for silicon-on-insulator nanophotonic waveguides.

Author information

1
Ghent University - IMEC, Department of Information Technology, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium. wim.bogaerts@intec.ugent.be

Abstract

We present compact crossings for silicon-on-insulator photonic wires. The waveguides are broadened using a 3 microm parabolic taper in each arm. By locally applying a lower index contrast using a double-etch technique, loss of confinement is reduced and 97.5% transmission (-1.7 dB) is achieved with only -40 dB cross talk.

PMID:
17909578
DOI:
10.1364/ol.32.002801

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