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Phasematched three-wave mixing in poled optical fibres

Phasematched three-wave mixing in poled optical fibres
Phasematched three-wave mixing in poled optical fibres
It is now well known that high-intensity light may be used to write second-order non-linear gratings into optical fibre. The process is thought to be due to the alignment of defect centres, a view which is supported by the recently demonstrated fibre poling technique. In this, even stronger second-order non-linearities are generated by applying external electric fields to the fibre. Fibre poling has produced second-order non-linearities only ten times lower than in KDP and uniformly poled fibres have been employed as electro-optic modulators. Efficient second-harmonic generation has been demonstrated in poled fibres by employing mode-interference gratings (MIGs) for phase-matching. MIGs can maintain coherent in-phase propagation of the pump and SH-light in up to 10cm of fibre, limited only by fibre non-uniformities. Here, we demonstrate for the first time that MIGs may also be employed for phase-matching general three-wave mixing processes in poled optical fibres. The phase-matching conditions for TWM may easily be estimated from measurements of the wavelengths where phase-matched SHG is obtained.
Fermann, M.E.
7b069725-c906-4b27-9b6d-1034b99b0cf7
Wells, P.J.
2177ced9-6ea6-4bf6-af53-8df558df8107
Li, L.
3d47f862-e449-42d4-be13-5bf827cf8383
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e
Fermann, M.E.
7b069725-c906-4b27-9b6d-1034b99b0cf7
Wells, P.J.
2177ced9-6ea6-4bf6-af53-8df558df8107
Li, L.
3d47f862-e449-42d4-be13-5bf827cf8383
Dong, L.
4a30a247-d676-42ef-aaf4-061579d6d64e

Fermann, M.E., Wells, P.J., Li, L. and Dong, L. (1990) Phasematched three-wave mixing in poled optical fibres. OSA Topical Meeting Photorefractive Materials Effects and Devices, Aussois, France. 17 - 19 Jun 1990.

Record type: Conference or Workshop Item (Paper)

Abstract

It is now well known that high-intensity light may be used to write second-order non-linear gratings into optical fibre. The process is thought to be due to the alignment of defect centres, a view which is supported by the recently demonstrated fibre poling technique. In this, even stronger second-order non-linearities are generated by applying external electric fields to the fibre. Fibre poling has produced second-order non-linearities only ten times lower than in KDP and uniformly poled fibres have been employed as electro-optic modulators. Efficient second-harmonic generation has been demonstrated in poled fibres by employing mode-interference gratings (MIGs) for phase-matching. MIGs can maintain coherent in-phase propagation of the pump and SH-light in up to 10cm of fibre, limited only by fibre non-uniformities. Here, we demonstrate for the first time that MIGs may also be employed for phase-matching general three-wave mixing processes in poled optical fibres. The phase-matching conditions for TWM may easily be estimated from measurements of the wavelengths where phase-matched SHG is obtained.

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More information

Published date: 1990
Venue - Dates: OSA Topical Meeting Photorefractive Materials Effects and Devices, Aussois, France, 1990-06-17 - 1990-06-19
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 77493
URI: https://eprints.soton.ac.uk/id/eprint/77493
PURE UUID: 63b7d00e-593f-4e34-a9e9-e27c8a305f2e

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Date deposited: 11 Mar 2010
Last modified: 02 Feb 2018 17:36

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