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

P. Mehta, N. Healy, T. D. Day, J. R. Sparks, P. J.A. Sazio, J. V. Badding, A. C. Peacock

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


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. Subpicosec-ond 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.

Original languageEnglish (US)
Pages (from-to)19078-19083
Number of pages6
JournalOptics Express
Issue number20
StatePublished - Sep 26 2011

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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