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dc.contributor.authorBRADLEY, LOUISEen
dc.date.accessioned2009-07-02T15:52:26Z
dc.date.available2009-07-02T15:52:26Z
dc.date.issued2008en
dc.date.submitted2008en
dc.identifier.citationS. Philippe, A.L. Bradley, B. Kennedy, F. Surre, P. Landais, Experimental Investigation of Polarization Effects in Semiconductor Optical Amplifiers and Implications for All-Optical Switching, Journal of Lightwave Technology, 26, 16, 2008, 2977 - 2985en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/31147
dc.descriptionPUBLISHEDen
dc.description.abstractA free-space contra-propagation configuration is implemented and pump-probe studies are undertaken in order to study polarization-dependent gain dynamics in bulk semiconductor optical amplifiers (SOAs) and their application to gain and polarization switching. The polarization dependence of the gain compression shows that the co-polarized case, in which the pump and probe are TE-polarized, is the optimum for gain switching. When injecting light polarized at 45 , an additional contribution due to the presence of rotating fields is observed, and the cross-polarized case is found to be the most promising for polarization switching. The potential for all-optical switching based on nonlinear polarization rotation (NLPR) induced in the SOA is then assessed through characterization of the dynamics of the state of polarization. It is demonstrated that by careful selection of the orientation of a linear polarizer in front of the detector, it is possible to reduce the recovery time from 100 to 5 ps. The improvement comes about from the selection of the intraband fast gain recovery dynamics. Polarization switching offers potentially faster switching times compared to gain switching as well as an extinction ratio improvement of 10 dB.en
dc.description.sponsorshipThis work was supported by Enterprise Ireland.en
dc.format.extent2977 - 2985en
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.relation.ispartofseriesJournal of Lightwave Technologyen
dc.relation.ispartofseries26en
dc.relation.ispartofseries16en
dc.rightsYen
dc.subjectTerms?All-optical switching, cross-gain modulation, nonlinear polarization rotation (NLPR), pump-probe, semiconductor optical amplifiers.en
dc.titleExperimental Investigation of Polarization Effects in Semiconductor Optical Amplifiers and Implications for All-Optical Switchingen
dc.typeJournal Articleen
dc.contributor.sponsorEnterprise Irelanden
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/bradlelen
dc.identifier.rssinternalid56756en
dc.identifier.doihttp://dx.doi.org/10.1109/JLT.2008.922326en
dc.subject.TCDThemeNanoscience & Materialsen


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