激光与光电子学进展, 2018, 55 (4): 040102, 网络出版: 2018-09-11   

小型化空气折射率测量装置的精度修正 下载: 1227次

Accuracy Correction of Miniaturization Device for Air Refractive Index Measurement
作者单位
天津大学电气自动化与信息工程学院光纤通信实验室, 天津 300072
摘要
基于Edlen公式法理论精度高的特点,采用小型数字传感器测量温度、湿度、大气压等参数,间接计算了空气折射率的值。针对传统方法精度不足的问题,提出利用二等标准铂电阻温度计和气压传感器对数字传感器测量值进行校准和修正的方法,并利用温度值对大气压值进行修正,提高了空气折射率的计算精度。使用修正后的传感器进行测量,结果表明空气折射率的精度达到±5.13×10 -8,接近Edlen公式所提的10 -8量级的理论精度。与测距法相比,Edlen公式法的空气折射率测量值的准确度为10 -7量级,该方法可广泛用于需求小型化空气折射率测量装置的场合。
Abstract
Based on the high theoretical accuracy of the Edlen formula method, the value of air refractive index is calculated according to parameters, such as temperature, humidity, and atmospheric pressure, which are measured by the small digital sensor. Aiming at the problem of insufficient accuracy in traditional method, we propose a method based on the second class standard platinum resistance thermometer and the pressure sensor to calibrate and correct the measured values of digital sensors, and use the temperature value to correct the atmospheric pressure, which can improve the accuracy of air refractive index. We use the revised sensor in the measurement, and the experimental results show that the precision of air refractive index reaches to ±5.13×10 -8, which is closed to the theoretical accuracy of 10 -8 obtained by Edlen formula. Compared with the results of distance ranging method, the accuracy of measured air refractive index reaches to 10 -7. The sensors can be widely used in the air refractive index measurement applications which need miniaturization.

吴炳阳, 于晋龙, 王菊, 王文睿. 小型化空气折射率测量装置的精度修正[J]. 激光与光电子学进展, 2018, 55(4): 040102. Bingyang Wu, Jinlong Yu, Ju Wang, Wenrui Wang. Accuracy Correction of Miniaturization Device for Air Refractive Index Measurement[J]. Laser & Optoelectronics Progress, 2018, 55(4): 040102.

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