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Intermodal Bragg-scattering four wave mixing in silicon waveguides

Intermodal Bragg-scattering four wave mixing in silicon waveguides
Intermodal Bragg-scattering four wave mixing in silicon waveguides
We demonstrate optical wavelength conversion in a multi-mode silicon waveguide using four wave mixing (FWM) Bragg scattering (BS) enabled by a dual-pump CW scheme. The original signal and the generated idler pair excite one spatial mode (first TE mode), while the two pumps excite a different spatial mode (second TE mode) of the same waveguide. Our approach exploits the differences in the group velocities of the various supported spatial modes to ensure phase matching only for the desired nonlinear process. In this proof-of-principle experiment, any unintended idlers are generated with an extinction ratio up to 12 dB relative to the phase-matched idlers for a pumps-to-signal-idler-pair wavelength detuning of about 70 nm. The scalability of the scheme to achieve larger and multiple signal wavelength detunings from the pump frequencies is also discussed.
0733-8724
Lacava, Cosimo
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Ettabib, Mohamed A.
8148b589-71d1-4cbd-a112-621ea94798e7
Domínguez Bucio, Thalia
83b57799-c566-473c-9b53-92e9c50b4287
Sharp, Graham
12ab004e-db6f-41da-9b9c-c67c4c6ee3a4
Khokhar, Ali
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sorel, Marc
475dd1ee-3ebd-474e-b644-71f5e2adaa58
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Parmigiani, Francesca
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Lacava, Cosimo
a0a31a27-23ac-4a73-8bb4-2f02368fb8bd
Ettabib, Mohamed A.
8148b589-71d1-4cbd-a112-621ea94798e7
Domínguez Bucio, Thalia
83b57799-c566-473c-9b53-92e9c50b4287
Sharp, Graham
12ab004e-db6f-41da-9b9c-c67c4c6ee3a4
Khokhar, Ali
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sorel, Marc
475dd1ee-3ebd-474e-b644-71f5e2adaa58
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Parmigiani, Francesca
6a386833-5186-4448-875e-d691161aba62

Lacava, Cosimo, Ettabib, Mohamed A., Domínguez Bucio, Thalia, Sharp, Graham, Khokhar, Ali, Jung, Yongmin, Sorel, Marc, Gardes, Frederic, Richardson, David J., Petropoulos, Periklis and Parmigiani, Francesca (2019) Intermodal Bragg-scattering four wave mixing in silicon waveguides. IEEE Journal of Lightwave Technology, 37 (7).

Record type: Article

Abstract

We demonstrate optical wavelength conversion in a multi-mode silicon waveguide using four wave mixing (FWM) Bragg scattering (BS) enabled by a dual-pump CW scheme. The original signal and the generated idler pair excite one spatial mode (first TE mode), while the two pumps excite a different spatial mode (second TE mode) of the same waveguide. Our approach exploits the differences in the group velocities of the various supported spatial modes to ensure phase matching only for the desired nonlinear process. In this proof-of-principle experiment, any unintended idlers are generated with an extinction ratio up to 12 dB relative to the phase-matched idlers for a pumps-to-signal-idler-pair wavelength detuning of about 70 nm. The scalability of the scheme to achieve larger and multiple signal wavelength detunings from the pump frequencies is also discussed.

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Intermodal bragg-scattering four wave mixing in silicon waveguides - Accepted Manuscript
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e-pub ahead of print date: 25 February 2019

Identifiers

Local EPrints ID: 430867
URI: https://eprints.soton.ac.uk/id/eprint/430867
ISSN: 0733-8724
PURE UUID: 85f1f585-5c9c-47cc-b6a9-8491b9deddbc
ORCID for Cosimo Lacava: ORCID iD orcid.org/0000-0002-9950-8642
ORCID for Thalia Domínguez Bucio: ORCID iD orcid.org/0000-0002-3664-1403
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034
ORCID for Francesca Parmigiani: ORCID iD orcid.org/0000-0001-7784-2829

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Date deposited: 16 May 2019 16:30
Last modified: 10 Dec 2019 01:57

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Contributors

Author: Cosimo Lacava ORCID iD
Author: Mohamed A. Ettabib
Author: Graham Sharp
Author: Ali Khokhar
Author: Yongmin Jung
Author: Marc Sorel
Author: Frederic Gardes

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