Ultrafast wavelength conversion via cross-phase modulation in hydrogenated amorphous silicon optical fibers

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

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We present a characterization of the spectral modulation and wavelength shifting induced via cross-phase modulation (XPM) in a hydrogenated amorphous silicon (a-Si:H) core optical fiber. Pump-probe experiments using picosecond and femtosecond signal pulses are shown to be in good agreement with numerical simulations of the coupled nonlinear propagation equations. The large 10nm red-shifts obtained with the femtosecond probe pulses are attributed to the high Kerr nonlinearity of the a-Si:H material. Extinction ratios as high as 12dB are measured for the conversion process at telecommunications wavelengths, indicating the potential for high-speed nonlinear optical control in a-Si:H fibers and waveguides.

Original languageEnglish (US)
Pages (from-to)26110-26116
Number of pages7
JournalOptics Express
Volume20
Issue number24
DOIs
StatePublished - Nov 19 2012

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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