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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >High-resolution fast response fiber-optic laser calorimeter using a twin interferometric temperature sensor
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High-resolution fast response fiber-optic laser calorimeter using a twin interferometric temperature sensor

机译：使用双干涉温度传感器的高分辨率快速响应光纤激光量热仪

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摘要

We describe a calorimeter for laser power measurements of the conduction type with twin fiber-optic temperature sensor. The sensor employs two fiber-optic polarization insensitive loop interferometers with twisted sections of high-birefringence fiber. The temperature dependent birefringence of these sections is monitored by a white light interferometric technique with signal processing in the spectral domain. One interferometer performs the measurements of the absorber's temperature that depends on the power of incident laser radiation, whereas the other is for monitoring the temperature inside the probe head. A thermal model of the calorimeter has been analyzed. It has been shown that it is possible to reduce the calorimeter's response time, if the laser power is measured using the difference ΔT=T_(1)-bT_(2), where T_(1) and T_(2) are the readings of the twin temperature sensor, and the factor b depends on the thermal conduction path between the two interferometers. Experimental results are presented for optical power measurements between 0 and 3 W with a resolution of 0.3 mW and a response time of a few seconds.
机译：我们描述了一种用于双光纤温度传感器传导类型的激光功率测量的量热仪。该传感器使用两个光纤偏振不敏感环路干涉仪，并带有高双折射光纤的扭曲部分。这些部分的温度相关双折射通过白光干涉测量技术进行监控，并在光谱域中进行信号处理。一个干涉仪根据入射激光辐射的功率来测量吸收体的温度，而另一个干涉仪则用于监测探头内部的温度。已分析了量热仪的热模型。已经表明，如果使用差值ΔT= T_（1）-bT_（2）测量激光功率，则可以减少量热仪的响应时间，其中T_（1）和T_（2）是双温度传感器，系数b取决于两个干涉仪之间的热传导路径。实验结果显示了0至3 W的光功率测量，分辨率为0.3 mW，响应时间为几秒钟。

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