title: Cascaded Mach-Zehnder wavelength filters in silicon photonics for low loss and flat pass-band WDM (de-)multiplexing.
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.
authors.affiliation: IBM Research - Zürich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland. fho@zurich.ibm.com
authors.forename: Folkert
authors.initials: F
authors.lastname: Horst
authors.forename: William M J
authors.initials: WM
authors.lastname: Green
authors.forename: Solomon
authors.initials: S
authors.lastname: Assefa
authors.forename: Steven M
authors.initials: SM
authors.lastname: Shank
authors.forename: Yurii A
authors.initials: YA
authors.lastname: Vlasov
authors.forename: Bert Jan
authors.initials: BJ
authors.lastname: Offrein
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008027:Light; D010783:Photometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*
chemical_list: D012825:Silicon