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The impact of pump polarization on the polarization dependence of the Raman gain due to the breaking of a fibre's circular symmetry
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
2004 (English)In: Journal of Optics. A, Pure and applied optics, ISSN 1464-4258, E-ISSN 1741-3567, Vol. 6, no 3, S72-S76 p.Article in journal (Refereed) Published
Abstract [en]

For many practical applications, the polarization dependence of the Raman gain (Raman PDG) is considered as a drawback. Most approaches used to reduce the PDG are based on depolarization or scrambling of the pump source polarization. We report on an experimentally observed effect and describe a method for reducing the Raman PDG by means of polarization control with a fully polarized pump source. The method makes it possible to maintain high efficiency of the Raman gain. The absence of circular symmetry (on average) in non-polarization maintaining fibres allows one to find a certain polarization state of the pump to minimize the Raman PDG. The observed phenomenon is inherently related to polarization mode dispersion which always exists in optical fibres.

Place, publisher, year, edition, pages
2004. Vol. 6, no 3, S72-S76 p.
Keyword [en]
polarization mode dispersion, Raman gain, fibre optical amplifiers, dispersion-compensating fibers, amplifiers
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-23290ISI: 000220559300014Scopus ID: 2-s2.0-1642587653OAI: oai:DiVA.org:kth-23290DiVA: diva2:341988
Note
QC 20100525 QC 20111019Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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