The University of Dublin | Trinity College -- Ollscoil Átha Cliath | Coláiste na Tríonóide
Trinity's Access to Research Archive
Home :: Log In :: Submit :: Alerts ::

School of Physics >
Physics >
Physics (Scholarly Publications) >

Please use this identifier to cite or link to this item:

Title: Experimental Investigation of Polarization Effects in Semiconductor Optical Amplifiers and Implications for All-Optical Switching
Sponsor: Enterprise Ireland
Irish Research Council for Science Engineering and Technology
Author's Homepage:
Keywords: Terms—All-optical switching, cross-gain modulation, nonlinear polarization rotation (NLPR), pump-probe, semiconductor optical amplifiers.
Issue Date: 2008
Citation: S. 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 - 2985
Series/Report no.: Journal of Lightwave Technology
Abstract: A 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.
Description: PUBLISHED
Appears in Collections:Physics (Scholarly Publications)

Files in This Item:

File Description SizeFormat
Experimental Investigation.pdfpublished (publisher copy) peer-reviewed433.96 kBAdobe PDFView/Open

This item is protected by original copyright

Please note: There is a known bug in some browsers that causes an error when a user tries to view large pdf file within the browser window. If you receive the message "The file is damaged and could not be repaired", please try one of the solutions linked below based on the browser you are using.

Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback