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首页> 外文期刊>Lightwave Technology, Journal of >Investigation of Wavelength Modulation and Wavelength Sweep Techniques in Intracavity Fiber Laser for Gas Detection
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Investigation of Wavelength Modulation and Wavelength Sweep Techniques in Intracavity Fiber Laser for Gas Detection

机译：腔内光纤激光器中用于气体检测的波长调制和波长扫描技术研究

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摘要

Wavelength modulation technique (WMT) and wavelength sweep technique (WST) are introduced into intracavity fiber laser for both gas concentration sensing and absorption wavelength detection in this paper. The principle of gas sensing and spectral analysis using WMT and WST was studied. Polynomial fit was adopted to model the system nonlinear characteristic, based on which absorption wavelength can be detected. The system optimization and acetylene gas sensing were both realized, and the absolute detected error can be increased less than 75 ppm. The absorption wavelengths of the detected gas were calculated based on the polynomial fitting results of the system nonlinear. The absorption wavelengths of acetylene were detected using this method, with absolute error no more than 0.445 nm. The system has the ability of realizing both concentration sensing and gas-type recognition.
机译：本文将波长调制技术（WMT）和波长扫描技术（WST）引入腔内光纤激光器中，以同时进行气体浓度检测和吸收波长检测。研究了使用WMT和WST进行气体感测和光谱分析的原理。采用多项式拟合对系统的非线性特性进行建模，从而可以检测吸收波长。均实现了系统优化和乙炔气传感，并且绝对检测误差可增加到小于75 ppm。根据系统非线性的多项式拟合结果计算检测到的气体的吸收波长。使用此方法检测乙炔的吸收波长，绝对误差不超过0.445 nm。该系统具有实现浓度感应和气体类型识别的能力。

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