摘要
阐述了由于Anti-Stokes拉曼散射光和Stokes拉曼散射光在光纤中衰减不一致引起分布式光纤测温系统测温误差的原理,提出了一种新的衰减不一致的修正方法。实验证明,此方法不需要进行任何衰减补偿,并适用于不同品牌、不同衰减的光纤。测温精度实验数据表明,应用此方法的测温系统精度高、定位准确。
The principle that the attenuation difference of Anti-Stokes and Stokes Raman scattering causes temperature measurement errors in the distributed temperature sensor system is explained, and a new attenuation correction method is presented. The experiment proves that this method does not require any attenuation compensation, and is suitable for the optical fiber with different brands and different attenuation. Temperature measurement accuracy test shows that the system using this method has high precision and accurate positioning.
出处
《水电自动化与大坝监测》
2012年第6期34-36,共3页
HYDROPOWER AUTOMATION AND DAM MONITORING
关键词
分布式光纤测温系统
衰减不一致
衰减修正
拉曼散射
distributed temperature sensor system
attenuation difference
attenuation correction
Raman scattering
