title: Optical signal processing on a silicon chip at 640Gb/s using slow-light.
abstract: We demonstrate optical performance monitoring of in-band optical signal to noise ratio (OSNR) and residual dispersion, at bit rates of 40Gb/s, 160Gb/s and 640Gb/s, using slow-light enhanced optical third harmonic generation (THG) in a compact (80microm) dispersion engineered 2D silicon photonic crystal waveguide. We show that there is no intrinsic degradation in the enhancement of the signal processing at 640Gb/s relative to that at 40Gb/s, and that this device should operate well above 1Tb/s. This work represents a record 16-fold increase in processing speed for a silicon device, and opens the door for slow light to play a key role in ultra-high bandwidth telecommunications systems.
authors.affiliation: Institute for Photonics and Optical Sciences (IPOS), Centre for Ultra-high Bandwidth Devices for Optical Systems (CUDOS), School of Physics, University of Sydney, New South Wales 2006 Australia.
authors.forename: B
authors.initials: B
authors.lastname: Corcoran
authors.forename: C
authors.initials: C
authors.lastname: Monat
authors.forename: M
authors.initials: M
authors.lastname: Pelusi
authors.forename: C
authors.initials: C
authors.lastname: Grillet
authors.forename: T P
authors.initials: TP
authors.lastname: White
authors.forename: L
authors.initials: L
authors.lastname: O'Faolain
authors.forename: T F
authors.initials: TF
authors.lastname: Krauss
authors.forename: B J
authors.initials: BJ
authors.lastname: Eggleton
authors.forename: D J
authors.initials: DJ
authors.lastname: Moss