title: Cascadability properties of MZI-SOA-based all-optical 3R regenerators for RZ-DPSK signals.
abstract: We experimentally demonstrate 50 cascaded all-optical 3R regenerators over a 1,000 km transmission distance for 10-Gb/s return-to-zero differential phase-shift keying (RZ-DPSK) signals. The regenerator consists of integrated Mach-Zehnder interferometer (MZI) semiconductor optical amplifier (SOA) based wavelength converters. Regenerative properties and tolerance to pattern dependent effects have been studied in terms of Q-factor measurement, and error free operation with input OSNR of 20 dB/0.1 nm has also been demonstrated.
authors.affiliation: Electrical and Computer Engineering Department, University of California, Santa Barbara, 552 University Road, Santa Barbara, California 93106-9560, USA. tkise@ece.ucsb.edu
authors.forename: Tomofumi
authors.initials: T
authors.lastname: Kise
authors.forename: Kimchau N
authors.initials: KN
authors.lastname: Nguyen
authors.forename: John M
authors.initials: JM
authors.lastname: Garcia
authors.forename: Henrik N
authors.initials: HN
authors.lastname: Poulsen
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Blumenthal