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All-optical modulation using two-photon absorption in silicon core optical fibers

P.Mehta1, N.Healy1, T.D.Day2, J.R.Sparks2, P.J.A.Sazio1, J.V.Badding2, and A.C.Peacock1

1. Optoelectronics Research Centre, University of Southampton, UK
2. Department of Chemistry and Materials Research Institute, Pennsylvania State University, Pennsylvania 16802, USA

Abstract

All-optical modulation based on degenerate and non-degenerate two-photon absorption (TPA) is demonstrated within a hydrogenated amorphous silicon core optical fiber. The nonlinear absorption strength is determined by comparing the results of pump-probe experiments with numerical simulations of the coupled propagation equations. Subpicosecond modulation is achieved with an extinction ratio of more than 4dB at telecommunications wavelengths, indicating the potential for these fibers to find use in high speed signal processing applications.


Optics Express (2011) Vol.19(20) pp.19078-19083

doi: 10.1364/OE.19.019078

Southampton ePrint id: 201073

 

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