Testing of the detector based on the Faraday effect for the detection of high-power electromagnetic pulses

R. Białek; M. Kuchta

doi:10.1117/12.2524562

27 March 2019 Testing of the detector based on the Faraday effect for the detection of high-power electromagnetic pulses

R. Białek, M. Kuchta

Author Affiliations +

Proceedings Volume 11055, XII Conference on Reconnaissance and Electronic Warfare Systems; 110550H (2019) https://doi.org/10.1117/12.2524562
Event: XII Conference on Reconnaissance and Electronic Warfare Systems, 2018, Oltarzew, Poland

Abstract

Currently, high-power electromagnetic pulses are detected through antennas with conductive elements, which can causing the measured wave to interfere with waves reflected from metal elements. Moreover, they are characterized by a strongly non-linear frequency nature. Additional measuring system elements, such as a balun, attenuators, a limiter, which also impact the transmittance of the entire system are also used frequently. Appropriate selection of attenuation values when testing electromagnetic signals with unknown parameters is also problematic. An important aspect is also ensuring adequate detector resistance to the impact of high-power electromagnetic pulses. The paper discusses the test results for a prototype optoelectronic transducer based on the Faraday effect. The detector is designed in the fully dielectric technology. The system enables detecting a magnetic component of an electromagnetic field. Very similar amplitude values and signal shapes were obtained during the first tests involving the recording of system responses upon harmonic excitations with selected frequencies. The transfer characteristics for selected optical signal wavelengths (660 nm and 880 nm) were also measured, and a system response upon magnetic field pulse excitation was also recorded. Based on the measurements taken when determining the transfer characteristics, the linear correlation coefficients for a system operating at various optical light wavelengths were calculated. The incidence results also showed the need to conduct further studies in terms of increasing the sensitivity of the constructed detector. The disturbance level on the detector output should also be limited.

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R. Białek and M. Kuchta "Testing of the detector based on the Faraday effect for the detection of high-power electromagnetic pulses", Proc. SPIE 11055, XII Conference on Reconnaissance and Electronic Warfare Systems, 110550H (27 March 2019); https://doi.org/10.1117/12.2524562

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KEYWORDS

Electromagnetism

Sensors

Magnetism

Signal detection

Magnetic sensors

Photodiodes

Polarizers

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