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This article is cited in 7 scientific papers (total in 7 papers)
Fibre-optic sensors
Detection of electric current pulses by a fibre-optic sensor using spun fibre
Ya. V. Przhiyalkovskiy, V. P. Gubin, N. I. Starostin, S. K. Morshnev, A. I. Sazonov Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences
Abstract:
We have studied distinctive features of the response of a fibre-optic current sensor with a spun-fibre sensing loop to short current pulses. It has been shown theoretically that, in a reflective interferometer, the polarisation mode dispersion (PMD) in the sensing spun fibre has no effect on the pulsed output signal of the sensor, in contrast to the PMD in a connecting fibre line. The response of the current sensor to a rectangular pulse has linear edges and its duration is determined by the relationship between the current pulse duration and the light propagation time in the spun fibre. The transition from a linear edge to the maximum sensor response is not accompanied by any transient process. The maximum response amplitude corresponds to the response to an equivalent direct current at a current pulse duration exceeding the light propagation time in the spun fibre. The present calculation results and experimental data agree well for current pulses longer than 300 ns at a light propagation time in the spun fibre of ~1 μs.
Keywords:
spun optical fibre, fibre-optic sensor, response, current pulse, Faraday effect.
Received: 26.09.2017
Citation:
Ya. V. Przhiyalkovskiy, V. P. Gubin, N. I. Starostin, S. K. Morshnev, A. I. Sazonov, “Detection of electric current pulses by a fibre-optic sensor using spun fibre”, Kvantovaya Elektronika, 48:1 (2018), 62–69 [Quantum Electron., 48:1 (2018), 62–69]
Linking options:
https://www.mathnet.ru/eng/qe16757 https://www.mathnet.ru/eng/qe/v48/i1/p62
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Abstract page: | 351 | Full-text PDF : | 110 | References: | 31 | First page: | 15 |
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