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Ultrafast optical control using the Kerr nonlinearity in hydrogenated amorphous silicon microcylindrical resonators

Ultrafast optical control using the Kerr nonlinearity in hydrogenated amorphous silicon microcylindrical resonators
Ultrafast optical control using the Kerr nonlinearity in hydrogenated amorphous silicon microcylindrical resonators
Microresonators are ideal systems for probing nonlinear phenomena at low thresholds due to their small mode volumes and high quality (Q) factors. As such, they have found use both for fundamental studies of light-matter interactions as well as for applications in areas ranging from telecommunications to medicine. In particular, semiconductor-based resonators with large Kerr nonlinearities have great potential for high speed, low power all-optical processing. Here we present experiments to characterize the size of the Kerr induced resonance wavelength shifting in a hydrogenated amorphous silicon resonator and demonstrate its potential for ultrafast all-optical modulation and switching. Large wavelength shifts are observed for low pump powers due to the high nonlinearity of the amorphous silicon material and the strong mode confinement in the microcylindrical resonator. The threshold energy for switching is less than a picojoule, representing a significant step towards advantageous low power silicon-based photonic technologies.
microresonators, silicon photonics, nonlinear optics
1-5
Vukovic, N.
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Healy, N.
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Suhailin, F.H.
540f6c74-a557-4ebc-93e4-fae4750aa6b9
Mehta, P.
9cba5831-e3d5-4976-b246-98cf652f9665
Day, T.D.
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Badding, J.V.
940f7adb-73df-4f8a-9c46-e47f5425fef0
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Vukovic, N.
3de33ba9-eb8f-4a06-a65e-4ac0a602a157
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Suhailin, F.H.
540f6c74-a557-4ebc-93e4-fae4750aa6b9
Mehta, P.
9cba5831-e3d5-4976-b246-98cf652f9665
Day, T.D.
6a6e51d3-d48e-4082-9ef4-9698172e575b
Badding, J.V.
940f7adb-73df-4f8a-9c46-e47f5425fef0
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Vukovic, N., Healy, N., Suhailin, F.H., Mehta, P., Day, T.D., Badding, J.V. and Peacock, A.C. (2013) Ultrafast optical control using the Kerr nonlinearity in hydrogenated amorphous silicon microcylindrical resonators. Scientific Reports, 3 (2885), 1-5. (doi:10.1038/srep02885).

Record type: Article

Abstract

Microresonators are ideal systems for probing nonlinear phenomena at low thresholds due to their small mode volumes and high quality (Q) factors. As such, they have found use both for fundamental studies of light-matter interactions as well as for applications in areas ranging from telecommunications to medicine. In particular, semiconductor-based resonators with large Kerr nonlinearities have great potential for high speed, low power all-optical processing. Here we present experiments to characterize the size of the Kerr induced resonance wavelength shifting in a hydrogenated amorphous silicon resonator and demonstrate its potential for ultrafast all-optical modulation and switching. Large wavelength shifts are observed for low pump powers due to the high nonlinearity of the amorphous silicon material and the strong mode confinement in the microcylindrical resonator. The threshold energy for switching is less than a picojoule, representing a significant step towards advantageous low power silicon-based photonic technologies.

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Published date: 7 October 2013
Keywords: microresonators, silicon photonics, nonlinear optics
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 359708
URI: https://eprints.soton.ac.uk/id/eprint/359708
PURE UUID: f66a98a4-e12f-48cd-a11e-51e6efb01e46
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

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Date deposited: 11 Nov 2013 10:25
Last modified: 10 Dec 2019 01:46

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Contributors

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

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