An approach to improving the signal-to-optical-noise ratio of pulsed magnetic field photonic sensors

Jiang-ping Wang; Yu-quan Li

doi:10.1117/12.823070

23 February 2009 An approach to improving the signal-to-optical-noise ratio of pulsed magnetic field photonic sensors

Jiang-ping Wang, Yu-quan Li

Proceedings Volume 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors; 727818 (2009) https://doi.org/10.1117/12.823070
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

During last years, interest in pulsed magnetic field sensors has widely increased. In fact, magnetic field measurement has a critical part in various scientific and technical areas. In order to research on pulsed magnetic field characteristic and corresponding measuring and defending means, a sensor with high immunity to electrical noise, high sensitivity, high accuracy and wide dynamic range is needed. The conventional magnetic field measurement system currently use active metallic probes which can disturb the measuring magnetic field and make sensor very sensitive to electromagnetic noise. Photonic magnetic field sensor exhibit great advantages with respect to the electronic ones: a very good galvanic insulation, high sensitivity and very wide bandwidth. Photonic sensing technology is fit for demand of a measure pulsed magnetic field. A type of pulsed magnetic field photonic sensor has been designed, analyzed, and tested. The cross polarization angle in photonic sensor effect on the signal-to-optical-noise ratio is theoretically analyzed in this paper. A novel approach for improving the signal-to-optical-noise ratio of pulsed magnetic field sensors was proposed. The experiments have proved that this approach is practical. The theoretical analysis and simulation results show that the signal-to-optical-noise ratio can potentially be considerably improved by setup suitable for the cross polarization angle.

Citation Download Citation

Jiang-ping Wang and Yu-quan Li "An approach to improving the signal-to-optical-noise ratio of pulsed magnetic field photonic sensors", Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 727818 (23 February 2009); https://doi.org/10.1117/12.823070

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KEYWORDS

Magnetism

Magnetic sensors

Sensors

Photodetectors

Polarization

Geometrical optics

Interference (communication)

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