Two-section fiber optic Raman polarizer

Sergey Sergeyev, Sergei Popov

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Article number6093933
Pages (from-to)56-60
Number of pages5
JournalIEEE Journal of Quantum Electronics
Issue number1
Publication statusPublished - Jan 2012

Bibliographical note

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  • optical fiber amplifiers
  • Raman scattering


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