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Tapered polysilicon core fibers for nonlinear photonics

Tapered polysilicon core fibers for nonlinear photonics
Tapered polysilicon core fibers for nonlinear photonics
We propose and demonstrate a novel approach to obtaining small core polysilicon waveguides from the silicon fiber platform. The fibers were fabricated via a conventional drawing tower method and then subsequently tapered down to achieve silicon core diameters of ~1 µm, the smallest optical cores for this class of fiber to date. Characterization of the material properties have shown that the taper process helps to improve the local crystallinity of the silicon core, resulting in a significant reduction in the material loss. By exploiting the combination of small cores and low losses, these tapered fibers have enabled the first observation of nonlinear transmission within a polycrystalline silicon waveguide of any type. As the fiber drawing method is highly scalable, it opens a route for the development of low cost and flexible nonlinear silicon photonic systems.
0146-9592
1360 -1363
Suhailin, Fariza
540f6c74-a557-4ebc-93e4-fae4750aa6b9
Shen, Li
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Healy, Noel
26eec85c-8d12-4f21-a67a-022f8dc2daab
Xiao, Limin
c387801d-a629-4ce2-84dd-2f5333ea62a1
Jones, Maxwell
11d4c12e-00d9-49a6-be7a-911fb03798e2
Hawkins, Thomas
718ea907-5eb4-47b2-9c48-d56a788453c4
Ballato, John
a93092f5-bd5f-4126-ada9-142b93308ae5
Gibson, Ursula
a465acb0-eecd-43b9-80c3-2ffe42c48626
Peacock, Anna
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Suhailin, Fariza
540f6c74-a557-4ebc-93e4-fae4750aa6b9
Shen, Li
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Healy, Noel
26eec85c-8d12-4f21-a67a-022f8dc2daab
Xiao, Limin
c387801d-a629-4ce2-84dd-2f5333ea62a1
Jones, Maxwell
11d4c12e-00d9-49a6-be7a-911fb03798e2
Hawkins, Thomas
718ea907-5eb4-47b2-9c48-d56a788453c4
Ballato, John
a93092f5-bd5f-4126-ada9-142b93308ae5
Gibson, Ursula
a465acb0-eecd-43b9-80c3-2ffe42c48626
Peacock, Anna
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Suhailin, Fariza, Shen, Li, Healy, Noel, Xiao, Limin, Jones, Maxwell, Hawkins, Thomas, Ballato, John, Gibson, Ursula and Peacock, Anna (2016) Tapered polysilicon core fibers for nonlinear photonics. Optics Letters, 1360 -1363. (doi:10.1364/OL.41.001360).

Record type: Article

Abstract

We propose and demonstrate a novel approach to obtaining small core polysilicon waveguides from the silicon fiber platform. The fibers were fabricated via a conventional drawing tower method and then subsequently tapered down to achieve silicon core diameters of ~1 µm, the smallest optical cores for this class of fiber to date. Characterization of the material properties have shown that the taper process helps to improve the local crystallinity of the silicon core, resulting in a significant reduction in the material loss. By exploiting the combination of small cores and low losses, these tapered fibers have enabled the first observation of nonlinear transmission within a polycrystalline silicon waveguide of any type. As the fiber drawing method is highly scalable, it opens a route for the development of low cost and flexible nonlinear silicon photonic systems.

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More information

Accepted/In Press date: 17 February 2016
Published date: 16 March 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 388142
URI: https://eprints.soton.ac.uk/id/eprint/388142
ISSN: 0146-9592
PURE UUID: bac0b3f7-66f9-4796-b397-160ef1127d33
ORCID for Anna Peacock: ORCID iD orcid.org/0000-0002-1940-7172

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Date deposited: 19 Feb 2016 14:20
Last modified: 10 Dec 2019 06:37

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