FFT measuring method for magneto-optical ac current measurement

Shichuang Hu; Miaoyuan Ye; Gen Qu

doi:10.1117/12.50083

1 August 1991 FFT measuring method for magneto-optical ac current measurement

Shichuang Hu, Miaoyuan Ye, Gen Qu

Proceedings Volume 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91; (1991) https://doi.org/10.1117/12.50083
Event: International Conference on Optical Fibre Sensors in China, 1991, Wuhan, China

Abstract

A magneto-optical effect a polarizer is used in place of the Wollaston prism. For this simplified equipment, a new measuring technique has been developed--calculating the harmonics amplitude and phase shift of a measured current by means of the frequency spectrum of the output voltage. Then the current wave can be synthesized by the known parameters. The best way to obtain the spectrum is by fast fourier transform.

Citation Download Citation

Shichuang Hu, Miaoyuan Ye, and Gen Qu "FFT measuring method for magneto-optical ac current measurement", Proc. SPIE 1572, International Conference on Optical Fibre Sensors in China OFS(C) '91, (1 August 1991); https://doi.org/10.1117/12.50083

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