Impact of Rayleigh Backscattering on Stimulated Brillouin Scattering threshold evaluation for 10Gb/s NRZ-OOK signals. Ferrario, M., Marazzi, L., Boffi, P., Righetti, A., & Martinelli, M. In 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS, volume 17, pages 1-2, 5, 2008. Optical Society of American (OSA).
Impact of Rayleigh Backscattering on Stimulated Brillouin Scattering threshold evaluation for 10Gb/s NRZ-OOK signals [link]Website  abstract   bibtex   
At bit rates comparable with the Brillouin shift, i.e. higher than 10 Gbit/s, the signal and the Brillouin backscattered spectra partially overlap. This implies an interaction between different scattering phenomena occurring through out the optical fiber. In particular we believe that an evaluation of how Rayleigh backscattered components of the modulated signal are subjected to Stokes gain is required. This interaction may lead to an increased backscattered power, which in turn will affect Brillouin threshold estimation. We experimentally verified a decrease of Stimulated Brillouin Scattering (SBS) threshold for 10 Gb/s NRZ-OOK signals with respect to theoretical predictions. Simulations carried out with a numerical model of SBS, accounting for Rayleigh contributions, well predict measured backscattered power levels. On the other hand we also experimentally verified that this SBS threshold decrease does not degrade transmission system performance. Indeed, measured BER curves put into evidence a penalty reduction for signal powers just before the saturation regime, which should be usefully taken into consideration in optical systems power budget planning.
@inproceedings{
 title = {Impact of Rayleigh Backscattering on Stimulated Brillouin Scattering threshold evaluation for 10Gb/s NRZ-OOK signals},
 type = {inproceedings},
 year = {2008},
 identifiers = {[object Object]},
 keywords = {Computer-Aided Design,Computer-Assisted,Computer-Assisted: instrumentat,Equipment Design,Equipment Failure Analysis,Fiber Optic Technology,Fiber Optic Technology: instrumentation,Light,Microwaves,Radiation,Refractometry,Refractometry: instrumentation,Reproducibility of Results,Scattering,Sensitivity and Specificity,Signal Processing,Telecommunications,Telecommunications: instrumentation},
 pages = {1-2},
 volume = {17},
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 abstract = {At bit rates comparable with the Brillouin shift, i.e. higher than 10 Gbit/s, the signal and the Brillouin backscattered spectra partially overlap. This implies an interaction between different scattering phenomena occurring through out the optical fiber. In particular we believe that an evaluation of how Rayleigh backscattered components of the modulated signal are subjected to Stokes gain is required. This interaction may lead to an increased backscattered power, which in turn will affect Brillouin threshold estimation. We experimentally verified a decrease of Stimulated Brillouin Scattering (SBS) threshold for 10 Gb/s NRZ-OOK signals with respect to theoretical predictions. Simulations carried out with a numerical model of SBS, accounting for Rayleigh contributions, well predict measured backscattered power levels. On the other hand we also experimentally verified that this SBS threshold decrease does not degrade transmission system performance. Indeed, measured BER curves put into evidence a penalty reduction for signal powers just before the saturation regime, which should be usefully taken into consideration in optical systems power budget planning.},
 bibtype = {inproceedings},
 author = {Ferrario, M. and Marazzi, Lucia and Boffi, Pierpaolo and Righetti, Aldo and Martinelli, Mario},
 booktitle = {2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS}
}
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