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

Ultrafast wavelength conversion via cross-phase modulation in hydrogenated amorphous silicon optical fibers
Ultrafast wavelength conversion via cross-phase modulation in hydrogenated amorphous silicon optical fibers
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.
1094-4087
26110-26116
Mehta, P.
6632423c-f325-40f3-a5b8-7afcd8619a25
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Day, T.D.
6a6e51d3-d48e-4082-9ef4-9698172e575b
Badding, J.V.
940f7adb-73df-4f8a-9c46-e47f5425fef0
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Mehta, P.
6632423c-f325-40f3-a5b8-7afcd8619a25
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Day, T.D.
6a6e51d3-d48e-4082-9ef4-9698172e575b
Badding, J.V.
940f7adb-73df-4f8a-9c46-e47f5425fef0
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Mehta, P., Healy, N., Day, T.D., Badding, J.V. and Peacock, A.C. (2012) Ultrafast wavelength conversion via cross-phase modulation in hydrogenated amorphous silicon optical fibers. Optics Express, 20 (24), 26110-26116. (doi:10.1364/OE.20.026110). (PMID: 23187466)

Record type: Article

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.

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Published date: November 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 347757
URI: https://eprints.soton.ac.uk/id/eprint/347757
ISSN: 1094-4087
PURE UUID: 56aa8c1c-8fba-4107-a07c-25de2a45478e
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

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Date deposited: 30 Jan 2013 14:28
Last modified: 05 Nov 2019 01:51

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Contributors

Author: P. Mehta
Author: N. Healy
Author: T.D. Day
Author: J.V. Badding
Author: A.C. Peacock ORCID iD

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