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Opt Express. 2013 May 20;21(10):11652-8. doi: 10.1364/OE.21.011652.

Cascaded Mach-Zehnder wavelength filters in silicon photonics for low loss and flat pass-band WDM (de-)multiplexing.

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  • 1IBM Research - Zürich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland. fho@zurich.ibm.com

Abstract

We present 1-to-8 wavelength (de-)multiplexer devices based on a binary tree of cascaded Mach-Zehnder-like lattice filters, and manufactured using a 90 nm CMOS-integrated silicon photonics technology. We demonstrate that these devices combine a flat pass-band over more than 50% of the channel spacing with low insertion loss of less than 1.6 dB, and have a small device size of approximately 500 × 400 µm. This makes this type of filters well suited for application as WDM (de-)multiplexer in silicon photonics transceivers for optical data communication in large scale computer systems.

PMID:
23736388
[PubMed - indexed for MEDLINE]
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