A Double-Edge Demodulation and Correction Method of the PZT Type Grating Demodulation Instrument

Zhang Jun

doi:10.13756/j.gtxyj.2016.06.015

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A Double-Edge Demodulation and Correction Method of the PZT Type Grating Demodulation Instrument

- A Double-Edge Demodulation and Correction Method of the PZT Type Grating Demodulation Instrument
- Study on Optical communication Issue 6, Pages: 53-55(2016)
- 作者机构：
  
  湖北省交通运输厅武黄高速公路管理处
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2016.06.015
  CLC： TN253
- Published：2016，
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[1]张俊.压电陶瓷型光栅解调仪双边沿解调修正方法[J].光通信研究,2016(06):53-55.

Zhang Jun. A Double-Edge Demodulation and Correction Method of the PZT Type Grating Demodulation Instrument. [J]. (6):53-55(2016)
[1]张俊.压电陶瓷型光栅解调仪双边沿解调修正方法[J].光通信研究,2016(06):53-55. DOI： 10.13756/j.gtxyj.2016.06.015.

Zhang Jun. A Double-Edge Demodulation and Correction Method of the PZT Type Grating Demodulation Instrument. [J]. (6):53-55(2016) DOI： 10.13756/j.gtxyj.2016.06.015.

摘要

为了提高光纤光栅解调仪表的速度与精度

提出了一种双边沿解调及非线性修正方法对PZT（压电陶瓷）的迟滞效应进行补偿。通过对PZT两端电压的上升、下降沿同时采集数据并进行交叉解调的方式

在提高解调速度的同时有效地消除了迟滞效应。利用1个10探测点的C波段光栅对该修正方法进行检验

修正效果较为理想

各波长的解调误差小于±5pm。

Abstract

In order to improve the demodulating speed and precision of the instrument

this paper propose a double-edge demodulation and nonlinear correction method to modifythe hysteresis effectof the piezoelectric ceramic.The demodulating speed and accuracy of the instrument has been improved by a cross-demodulation method using the data at rising edge and failing edge of triangle voltage at the same time.The effectiveness of thenonlinear correction method has been verified using a C band grating with 10 detection points.It is found that the wavelength demodulation error is less than ±5pm.

关键词

压电陶瓷迟滞效应双边沿非线性修正

Keywords

PZThysteresis effectdouble-edgenonlinear correction

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