Open AccessMulti-channel in-band OSNR monitoring using Stimulated Brillouin Scattering
Author(s) -
Mark Pelusi,
Amy Fu,
Benjamin J. Eggleton
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.009435
Subject(s) - brillouin scattering , optics , wavelength division multiplexing , polarization (electrochemistry) , physics , optical power , wavelength , optical amplifier , signal (programming language) , multiplexing , materials science , optical fiber , telecommunications , laser , chemistry , computer science , programming language
We investigate an optical performance monitor based on Stimulated Brillouin scattering (SBS), for enabling the measurement of the in-band optical signal to noise ratio (OSNR) for multiple channels of a wavelength-division multiplexed (WDM) signal simultaneously. The principle relies on propagating the signal in a nonlinear waveguide so that each channel pumps SBS to produce a back-scattered Stokes wave of unique carrier wavelength, and with a power that depends on the in-band OSNR of the channel itself. We experimentally demonstrate a highly sensitive OSNR measurement for a 3 x 40 Gb/s signal, with a small sensitivity to the input state of polarization, and a large dynamic range (25 dB) in the Stokes power. Our results also reveal the insensitivity of SBS to both chromatic and polarization-mode dispersions, and the indirect role these effects can play in mitigating the suppression of SBS from the nonlinear Kerr effect.