Nonlinear transmission properties of hydrogenated amorphous silicon core fibers towards the mid-infrared regime

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

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Abstract

The nonlinear transmission properties of hydrogenated amorphous silicon (a-Si:H) core fibers are characterized from the near-infrared up to the edge of the mid-infrared regime. The results show that this material exhibits linear losses on the order of a few dB/cm, or less, over the entire wavelength range, decreasing down to a value of 0.29dB/cm at 2.7μm, and negligible nonlinear losses beyond the two-photon absorption (TPA) edge ̃ 1.7μm. By measuring the dispersion of the nonlinear Kerr and TPA parameters we have found that the nonlinear figure of merit (FOMNL) increases dramatically over this region, with FOMNL < 20 around 2μm and above. This characterization demonstrates the potential for a-Si:H fibers and waveguides to find use in nonlinear applications extending beyond telecoms and into the mid-infrared regime.

Original languageEnglish (US)
Pages (from-to)13075-13083
Number of pages9
JournalOptics Express
Volume21
Issue number11
DOIs
StatePublished - Jun 3 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Shen, L., Healy, N., Mehta, P., Day, T. D., Sparks, J. R., Badding, J. V., & Peacock, A. C. (2013). Nonlinear transmission properties of hydrogenated amorphous silicon core fibers towards the mid-infrared regime. Optics Express, 21(11), 13075-13083. https://doi.org/10.1364/OE.21.013075