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An extended range OTDR system at 1.65µm based on delayed Raman amplification

An extended range OTDR system at 1.65µm based on delayed Raman amplification
An extended range OTDR system at 1.65µm based on delayed Raman amplification
This paper describes both theoretical and experimental results obtained in an investigation of a new technique for increasing the dynamic range of 1.65µm OTDR systems. The technique utilises delayed Raman amplification of 1.65µm signal pulse by a 1.53µm pump pulse. Amplification occurs when the two pulses overlap and this position is determined by the initial delay between the pulses and the fibre dispersion. An increase in dynamic range of 17.5dB has been observed and the OTDR backscattered Rayleigh signal was detected up to 100km. No significant noise penalty is introduced due to the directionality of the Raman gain.
0146-9592
349-351
Kee, Huai H.
99e4113d-380b-4a5c-bcca-430c0d621b08
Lees, Gareth P.
13384bff-3a8a-4525-b213-77eb17cb1c79
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
Kee, Huai H.
99e4113d-380b-4a5c-bcca-430c0d621b08
Lees, Gareth P.
13384bff-3a8a-4525-b213-77eb17cb1c79
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7

Kee, Huai H., Lees, Gareth P. and Newson, Trevor P. (1998) An extended range OTDR system at 1.65µm based on delayed Raman amplification. Optics Letters, 23 (5), 349-351. (doi:10.1364/OL.23.000349).

Record type: Article

Abstract

This paper describes both theoretical and experimental results obtained in an investigation of a new technique for increasing the dynamic range of 1.65µm OTDR systems. The technique utilises delayed Raman amplification of 1.65µm signal pulse by a 1.53µm pump pulse. Amplification occurs when the two pulses overlap and this position is determined by the initial delay between the pulses and the fibre dispersion. An increase in dynamic range of 17.5dB has been observed and the OTDR backscattered Rayleigh signal was detected up to 100km. No significant noise penalty is introduced due to the directionality of the Raman gain.

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Published date: 1998

Identifiers

Local EPrints ID: 77919
URI: https://eprints.soton.ac.uk/id/eprint/77919
ISSN: 0146-9592
PURE UUID: 73bf608c-89c2-4d49-83c4-c849df88de24

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Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:13

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