All-fiberopticcurrentsensors (AFOCS) used to measure the power supply system is superior to conventional current transformers and has broad prospect of application.
用于电力系统电流测量的全光纤电流传感器由于具有传统电流互感器无法比拟的优点，具有广阔的应用前景。
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In this paper, the actuality of fiber-opticcurrent sensor is introduced, the sorts of the current sensor are presented, and the merits and the demerits of these kinds of sensors are compared.