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Raman-DFB fibre laser enabled FWM in passive optical fibres

Raman-DFB fibre laser enabled FWM in passive optical fibres
Raman-DFB fibre laser enabled FWM in passive optical fibres
Wideband wavelength conversion utilizing four-wave mixing (FWM) in optical fibres has received significant attention in the area of fibre communications and networking, due to the natural low-loss compatibility with the conventional optical transmission systems [ref]. Within a 30cm long centre ð phase-shifted distributed-feedback (DFB) grating, formed in a commercially available germano-silica optical fibre (PS980, from Fibercore Ltd.), we recently experimentally demonstrated up to ~167nm wavelength conversion with a conversion efficiency up to -25dB [1, 2]. The concept of the FWM in that work was the following; firstly, a ~2W single-mode, single polarization Yb-doped fibre laser at 1064nm was used to pump a Raman DFB (R-DFB) grating to generate a narrowband signal at ~1117nm (the Bragg wavelength of the DFB) [3]. This lasing signal with a power of ~80mW subsequently acted as the pump for the FWM process allowing for the wavelength conversion of a low-power probe signal (~10mW) extending from 1040.8nm to 1207.8nm. Evidently, the phase-matching condition must be fulfilled to facilitate the FWM process. Although the wavelength region for the demonstrated FWM process lies entirely within the normal dispersion regime of the fibre, we believe that both the dispersion from the grating itself and the high intensity of the circulating lasing signal within the grating contributed strongly to modify the overall dispersion within the structure, thus enabling the phase-matching for such an efficient and wide-range FWM process.
Shi, J.
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Horak, P.
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Alam, S.-U.
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Ibsen, M.
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Shi, J.
89a3c824-71cc-457e-88b7-9e0c34d4cb2c
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03
Alam, S.-U.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9

Shi, J., Horak, P., Alam, S.-U. and Ibsen, M. (2013) Raman-DFB fibre laser enabled FWM in passive optical fibres. International Conference on Photorefractive Effects Materials and Devices (PR'13), Winchester, United Kingdom. 04 - 06 Sep 2013. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Wideband wavelength conversion utilizing four-wave mixing (FWM) in optical fibres has received significant attention in the area of fibre communications and networking, due to the natural low-loss compatibility with the conventional optical transmission systems [ref]. Within a 30cm long centre ð phase-shifted distributed-feedback (DFB) grating, formed in a commercially available germano-silica optical fibre (PS980, from Fibercore Ltd.), we recently experimentally demonstrated up to ~167nm wavelength conversion with a conversion efficiency up to -25dB [1, 2]. The concept of the FWM in that work was the following; firstly, a ~2W single-mode, single polarization Yb-doped fibre laser at 1064nm was used to pump a Raman DFB (R-DFB) grating to generate a narrowband signal at ~1117nm (the Bragg wavelength of the DFB) [3]. This lasing signal with a power of ~80mW subsequently acted as the pump for the FWM process allowing for the wavelength conversion of a low-power probe signal (~10mW) extending from 1040.8nm to 1207.8nm. Evidently, the phase-matching condition must be fulfilled to facilitate the FWM process. Although the wavelength region for the demonstrated FWM process lies entirely within the normal dispersion regime of the fibre, we believe that both the dispersion from the grating itself and the high intensity of the circulating lasing signal within the grating contributed strongly to modify the overall dispersion within the structure, thus enabling the phase-matching for such an efficient and wide-range FWM process.

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Published date: September 2013
Venue - Dates: International Conference on Photorefractive Effects Materials and Devices (PR'13), Winchester, United Kingdom, 2013-09-04 - 2013-09-06
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 360184
URI: https://eprints.soton.ac.uk/id/eprint/360184
PURE UUID: b542595f-3b48-4d3a-8f0d-8f37d492aa2e
ORCID for P. Horak: ORCID iD orcid.org/0000-0002-8710-8764

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Date deposited: 28 Nov 2013 14:07
Last modified: 12 Jul 2019 00:35

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Contributors

Author: J. Shi
Author: P. Horak ORCID iD
Author: S.-U. Alam
Author: M. Ibsen

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