title: Optical signal-to-noise ratio monitoring of an 80 Gbits/s polarization-multiplexed return-to-zero differential phase-shift keying channel.
abstract: We propose and experimentally demonstrate an optical signal-to-noise ratio (OSNR) monitoring technique for an 80 Gbits/s polarization-multiplexed return-to-zero differential phase-shift keying channel utilizing a narrowband optical filter and a low-speed detector. A maximum power increment of 19.7 dB is measured at a radio frequency (rf) of 250 MHz for monitoring of OSNR up to 27 dB, insensitive to chromatic dispersion of 0-300 ps/nm and polarization-mode dispersion (PMD) of 0-50 ps.
authors.affiliation: Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. jengyuay@usc.edu
authors.forename: J-Y
authors.initials: JY
authors.lastname: Yang
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Yue
authors.forename: V R
authors.initials: VR
authors.lastname: Arbab
authors.forename: A
authors.initials: A
authors.lastname: Agarwal
authors.forename: L
authors.initials: L
authors.lastname: Paraschis
authors.forename: A E
authors.initials: AE
authors.lastname: Willner