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Two-section fiber optic Raman polarizer for high-speed transmission systems
KTH, School of Information and Communication Technology (ICT), Optics and Photonics, Optics.
2011 (English)In: 2011 13TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON) / [ed] Jaworski, M; Marciniak, M, 2011Conference paper (Refereed)
Abstract [en]

We report on a theoretical study of polarization impairments in periodically spun fiber Raman amplifiers. Based on the Stochastic Generator approach we have derived equations for polarization dependent gain and mean-square gain fluctuations. We show that periodically spun fiber can work as a Raman polarizer but it suffers from increased polarization dependent gain and gain fluctuations. Unlike this, application of a depolarizer can result in suppression of polarization dependent gain and gain fluctuations. We demonstrate that it is possible to design a new fiber Raman polarizer by combining a short fiber without spin and properly chosen parameters and a long periodically spun fiber. This polarizer provides almost the same polarization pulling for all input signal states of polarization and so have very small polarization dependent gain. The obtained results can be used in high-speed fiber optic communication for design of quasi-isotropic spatially and spectrally transparent media with increased Raman gain.

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Keyword [en]
Fiber Raman amplifier, Polarization Mode Dispersion
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URN: urn:nbn:se:kth:diva-81647DOI: 10.1109/ICTON.2011.5970867ISI: 000297859300104ScopusID: 2-s2.0-80155140100OAI: diva2:497718
13th International Conference on Transparent Optical Networks (ICTON). Stockholm, SWEDEN. JUN 26-30, 2011
QC 20120305Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2012-03-05Bibliographically approved

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Popov, Sergei
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