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Two-Section Fiber Optic Raman Polarizer
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
2012 (English)In: IEEE Journal of Quantum Electronics, ISSN 0018-9197, E-ISSN 1558-1713, Vol. 48, no 1, 56-60 p.Article in journal (Refereed) Published
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 averaged equations to calculate 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 has very small polarization dependent gain.

Place, publisher, year, edition, pages
2012. Vol. 48, no 1, 56-60 p.
Keyword [en]
Optical fiber amplifiers, Raman scattering
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-63236DOI: 10.1109/JQE.2011.2177073ISI: 000298325400001Scopus ID: 2-s2.0-84055217887OAI: oai:DiVA.org:kth-63236DiVA: diva2:484741
Note
QC 20120127Available from: 2012-01-27 Created: 2012-01-23 Last updated: 2017-12-08Bibliographically approved

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