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Novel multi-pass E-M system for locating buried optical cables using Faraday rotation of the transmitted light

Novel multi-pass E-M system for locating buried optical cables using Faraday rotation of the transmitted light
Novel multi-pass E-M system for locating buried optical cables using Faraday rotation of the transmitted light
We present a novel high-sensitivity location technology for buried dielectric optical cables. A downwardtraveling RF EM wave modulates the state of polarization of the light guided by the buried fibre cable. The cable is located by observing the peak Faraday polarization modulation as the field generator is traversed laterally above the buried cable. We show we can enhance the sensor sensitivity firstly by employing a dual-pass method, giving 6dB SNR improvement, and then a more sophisticated multiple pass system, capable of achieving further SNR improvements. We show our systems demonstrate SNR improvements close to the theoretical limit.
Russell, S.J.
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Lewis, A.B.
07b928f0-931f-44ec-8788-18f09ed6ba36
Clarke, R.J.
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Fleury, B.R.
77313f31-bd39-41c1-9e13-3e62ad8e1c0a
Dakin, J.P.
490d5873-c444-423b-8d83-c49f118dc4b5
Russell, S.J.
926d527c-ff5d-4d35-99d9-9366bcd2bb10
Lewis, A.B.
07b928f0-931f-44ec-8788-18f09ed6ba36
Clarke, R.J.
13bafe73-355f-4549-a5e0-ab0006373597
Fleury, B.R.
77313f31-bd39-41c1-9e13-3e62ad8e1c0a
Dakin, J.P.
490d5873-c444-423b-8d83-c49f118dc4b5

Russell, S.J., Lewis, A.B., Clarke, R.J., Fleury, B.R. and Dakin, J.P. (2006) Novel multi-pass E-M system for locating buried optical cables using Faraday rotation of the transmitted light. 18th International Conference on Optical Fiber Sensors - OFS-18, Cancun, Mexico. 22 - 26 Oct 2006. 5 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

We present a novel high-sensitivity location technology for buried dielectric optical cables. A downwardtraveling RF EM wave modulates the state of polarization of the light guided by the buried fibre cable. The cable is located by observing the peak Faraday polarization modulation as the field generator is traversed laterally above the buried cable. We show we can enhance the sensor sensitivity firstly by employing a dual-pass method, giving 6dB SNR improvement, and then a more sophisticated multiple pass system, capable of achieving further SNR improvements. We show our systems demonstrate SNR improvements close to the theoretical limit.

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More information

Published date: 2006
Venue - Dates: 18th International Conference on Optical Fiber Sensors - OFS-18, Cancun, Mexico, 2006-10-22 - 2006-10-26

Identifiers

Local EPrints ID: 42391
URI: http://eprints.soton.ac.uk/id/eprint/42391
PURE UUID: 5891bfcd-8b66-4d29-ad69-4fbb4b3b3411

Catalogue record

Date deposited: 11 Dec 2006
Last modified: 08 Jan 2022 01:07

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Contributors

Author: S.J. Russell
Author: A.B. Lewis
Author: R.J. Clarke
Author: B.R. Fleury
Author: J.P. Dakin

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