title: Optically tunable compensation of nonlinear signal distortion in optical fiber by end-span optical phase conjugation.
abstract: We demonstrate a nonlinear signal processing approach for compensating nonlinear distortion caused by the Kerr effect in optical fiber transmission. The concept relies on propagating the signal through a separate all-optical module outside the link to apply tunable nonlinear distortion and phase-conjugation in series. We show this uniquely enables tunable regeneration of phase-encoded 40 Gb/s signals of different data-formats and number of WDM channels, to allow significantly higher transmission powers through single and multi-span fiber links. An improvement in the receiver power penalty by 3~4 dB for a bit-error-rate (BER) of ≈10⁻⁵ is achieved.
authors.affiliation: Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia. m.pelusi@physics.usyd.edu.au
authors.forename: Mark D
authors.initials: MD
authors.lastname: Pelusi
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017711:Nonlinear Dynamics; D055100:Optical Fibers