摘要
针对光子晶体光纤在传感技术和非线性传感系统应用中面临的传输模式突变、检测精度受模式变化而降低等方面问题,研制了一种具有低损耗高抗压的气体检测光子晶体光纤传感器。根据非线性传感系统和光子晶体光纤的带隙材料布局建立了损耗分析模型,并总结了孔距和包层直径对损耗的影响,从而建立损耗感知算法;对比单模、二阶模及异构孔对损耗的影响,建立了模式自适应调制算法;研制了一种基于损耗感知支持模式自适应调制的用于气体检测的光子晶体光纤传感器。测量系统的实验结果分别从损耗、检测精度和抗压等方面证明了所提方案研制的光纤传感器的可靠性和优越性。
Aiming at problems of facing in application of transmission mode of photonic crystal fiber（ PCF）sensing technique and nonlinear sensing system mutation,detection precision reducing with mode change,develop a low loss and high anti pressure gas detection photon crystal optical fiber sensor. According to nonlinear sensing system and band gap material layout of photonic crystal fiber,establish loss analysis model and summarize effect of distance of holes and diameter of cladding on loss,and establish loss awaring algorithm. Compare effects on singlemode,second order model and heterogeneous hole on loss,establish mode adaptive modulation algorithm; develop a loss perceived support adaptive modulation mode photonic crystal fiber sensor for gas detection. Experimental results of measurement system prove that advantages of the reliability and the superiority of the fiber sensor developed by the proposed scheme in aspects of loss,detection precision and compression.
出处
《传感器与微系统》
CSCD
2016年第5期121-123,127,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(61202285)
关键词
损耗感知
模式调制
气体检测
光子晶体光纤传感器
loss perception
mode modulation
gas detection
photonic crystal fiber（PCF） sensor
