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A single fibre-optic down-lead Faraday current sensor

Podoleanu, Adrian G.H., Fisher, Norman E., Jackson, David A. (1997) A single fibre-optic down-lead Faraday current sensor. Sensors and Actuators A: Physical, 58 (3). pp. 225-228. ISSN 0924-4247. (doi:10.1016/S0924-4247(97)01404-0) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://www.dx.doi.org/10.1016/S0924-4247(97)01404-...

Abstract

We demonstrate a single-down-lead common-mode rejection scheme for a bulk optic Faraday current sensor that can eliminate optical noise induced by fibre-link vibration. The new configuration is based upon the creation of two temporally delayed signals at the sensor level. One signal is encoded with the Faraday signal and the optical noise. The other signal contains the noise component only. By using a pulsed laser diode at the emitting point and electric delays at the receiving point, the two signals are combined differentially and time gated to eliminate the optical noise. As the delays at the sensor level cannot be too large due to the finite size of bulk optics configurations, it is neccessary for the laser, photodetector and electronics to work with nanosecond pulses. Methods to alleviate the constraints raised by the needs to process nanosecond pulses are discussed.

Item Type: Article
DOI/Identification number: 10.1016/S0924-4247(97)01404-0
Additional information: This is available as OPEN ACCESS by clicking on the URL.
Uncontrolled keywords: Faraday current sensors; Fibre optics
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 27 Jul 2015 09:54 UTC
Last Modified: 29 May 2019 14:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49823 (The current URI for this page, for reference purposes)
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