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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Sergeyev, Sergey; Popov, Sergei
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Journal: IEEE JOURNAL OF QUANTUM ELECTRONICS
Languages: English
Types: Article
Subjects:
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.
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    • Sergey Sergeyev received the M.Sc. and Ph.D. degrees in Physics from Belarusian State University (BSU), Minsk, in 1985 and 1991, respectively. He was with the Department of Physics, BSU, from 1985 to 1999. From 1999 to 2005, he worked in Sweden at Ericsson AB, Royal Institute of Technology, and Acreo AB. From 2005 to 2010, he worked at Optics Research Group (ORG), Waterford Institute of Technology, Waterford, Ireland as a Senior Researcher/Project Manager. Since 2010 he is working as a Marie Curie Research Fellow at Photonics Research Group, Aston University, Birmingham, UK. He has coauthored over 90 journal and conference papers in the areas of fiber optics, laser physics, and spectroscopy.
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