Effect of Modulation Error on All Optical Fiber Current Transformers


For actively modulated In-line Sagnac interferential all optic fiber current transformers (AOFCTs), the accuracies are directly affected by the amplitude of the modulation signal. In order to deeply undertand the function of the modulator, a theoretical model of modulation effect to AOFCTs is built up in this paper. The effect of the amplitude of the modulation signal to the output intensity of AOFCTs is theoretically formulated and numerical calculated. The results show that the modulation voltage variation could affect the output accuracies significantly. This might be some references on the investigation for practical applications of AOFCTs.

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Z. Wang, Y. Wang and S. Sun, "Effect of Modulation Error on All Optical Fiber Current Transformers," Journal of Sensor Technology, Vol. 2 No. 4, 2012, pp. 172-176. doi: 10.4236/jst.2012.24024.

Conflicts of Interest

The authors declare no conflicts of interest.


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