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首页> 外文会议>Emerging Trends in Electronic and Photonic Devices Systems, 2009. ELECTRO '09 >Bismuth Sulfide nanoparticle doped optical current sensors with enhanced Verdet constant
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Bismuth Sulfide nanoparticle doped optical current sensors with enhanced Verdet constant

机译：具有增强Verdet常数的硫化铋纳米颗粒掺杂光学电流传感器

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摘要

Magneto-optic current transformers (MOCT) are commonly used for measurement and protection purpose in high voltage power systems. Higher Verdet constant is desirable for increased resolution of the current sensor. In this work, an enhancement in the Verdet constant was demonstrated for bulk silica glass doped with Bismuth Sulfide quantum dots at very low AC magnetic fields. The measured values showed an enhancement of up to 3.6 times that of the original undoped blank glass host. The glasses were optically characterized using UV-Vis spectroscopy and then tested for magneto-optic sensitivity. The current sensing characteristics were defined with respect to the applied magnetic field and the rotation angle. The Verdet constant was determined by using a lock-in method that included a change in relative intensity at the detector.
机译：磁光电流互感器（MOCT）通常用于高压电源系统中的测量和保护目的。为了提高电流传感器的分辨率，需要较高的维尔德常数。在这项工作中，证实了在非常低的交流磁场下，掺有硫化铋量子点的大块石英玻璃的Verdet常数有所提高。测量值显示出比原始未掺杂的空白玻璃主体高多达3.6倍。使用紫外可见光谱对玻璃进行光学表征，然后测试其磁光灵敏度。相对于所施加的磁场和旋转角度来定义电流感测特性。 Verdet常数是通过使用锁定方法确定的，该方法包括检测器上相对强度的变化。

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