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

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 spacin...

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Bibliographic Details
Published in:Optics express 2013-05, Vol.21 (10), p.11652-11658
Main Authors: Horst, Folkert, Green, William M J, Assefa, Solomon, Shank, Steven M, Vlasov, Yurii A, Offrein, Bert Jan
Format: Article
Language:English
Subjects:
Equipment Design
Equipment Failure Analysis
Filtration - instrumentation
Light
Photometry - instrumentation
Refractometry - instrumentation
Signal Processing, Computer-Assisted - instrumentation
Silicon - chemistry
Surface Plasmon Resonance - instrumentation
Telecommunications - instrumentation
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.21.011652