量化噪声对FBG波长解调的精度影响及误差分析

发布时间：2018-06-27 18:41

本文选题：光纤布拉格光栅 + 量化噪声　；参考：《激光与红外》2017年05期

【摘要】：为提高光纤布拉格光栅(FBG)波长解调精度,建立了"量化噪声-波长误差"转换模型,并通过蒙特卡罗方法,对模型给出的误差预测结果进行了仿真验证。采用16位高精度模数转换器(ADC)搭建波长解调实验电路,误差分析结果表明,当ADC位数从6位到16位均匀增长时,波长解调误差从41.37 pm到0.34 pm呈指数下降,与模型计算和仿真结果相吻合。仿真及实验均表明,所提出的"量化噪声-波长误差"转换模型能准确分析量化误差对FBG波长解调精度的影响,为FBG波长解调仪中模数转换分辨率的选择提供设计依据。
[Abstract]:In order to improve the wavelength demodulation accuracy of fiber Prague grating (FBG), a "quantization noise wavelength error" conversion model is set up. Through Monte Carlo method, the error prediction results of the model are simulated. 16 bit high precision analog to digital converter (ADC) is used to build the wavelength demodulation experimental circuit. The error analysis results show that the number of ADC digits From 6 to 16 bits, the wavelength demodulation error decreased exponentially from 41.37 PM to 0.34 PM, which is consistent with the model calculation and simulation results. The simulation and experiment show that the proposed "quantization noise wavelength error" conversion model can accurately analyze the effect of quantization error on the FBG wavelength resolution accuracy and the analog digital conversion in the FBG wavelength demodulator. The selection of resolution provides the basis for design.
【作者单位】：北京信息科技大学光电信息与仪器北京市工程研究中心光电测试技术北京市重点实验室;北京信息科技大学生物医学检测技术及仪器北京实验室;
【基金】：教育部长江学者和创新团队发展计划(No.IRT1212) 北京市科技计划项目(No.Z151100003615010) 北京市科技成果转化与产业化(No.TJSHG201510772016)资助
【分类号】：TN253

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