强激光与粒子束, 2009, 21 (3): 341, 网络出版: 2009-11-24
闪烁光激励下大芯径阶跃光纤系统的时间响应研究
Time response of large-core step-index fiber transmission system with scintillator illumination
大芯径阶跃光纤 光纤冲击响应函数 漏泄模式光线 闪烁体-光纤无源探测系统 large-core step-index fiber time response of fiber tunneling ray scintillator-fiber passive detector system
摘要
引入材料色散和漏泄模式光线的传输效应,对D.Gloge多模光纤脉冲响应公式进行修正,利用修正后公式数值计算了在闪烁光激励下纤芯半径为0.1 mm、长50 m的石英阶跃光纤的冲击响应波形,该波形近似一高斯函数,半高宽为3 ns,前沿比后沿慢0.8 ns,且后沿存在拖尾。用该响应波形通过数值方法得到了闪烁体-光纤系统时间响应波形,与实验结果相比较,两者基本吻合。
Abstract
Considering material dispersion and tunneling ray,the D.Gloge’s theory formula of time response of multimode step-index fiber is modified.The modified formula is used to calculate the function of time response of 50 m long,0.2 mm core diameter step-index fiber with scintillator illumination.Results show that it is near a Gaussian distribution with FWHM 3.0 ns,the pulse risetime is more than the falling time and the falling time has a trailing.Time response of scintillator-fiber system is modeled by numerical method,the results of modeling accords with experimental results.
张美, 王奎禄, 魏福利, 邱孟通, 彭博栋, 袁媛, 王培伟. 闪烁光激励下大芯径阶跃光纤系统的时间响应研究[J]. 强激光与粒子束, 2009, 21(3): 341. Zhang Mei, Wang Kuilu, Wei Fuli, Qiu Mengtong, Peng Bodong, Yuan Yuan, Wang Peiwei. Time response of large-core step-index fiber transmission system with scintillator illumination[J]. High Power Laser and Particle Beams, 2009, 21(3): 341.
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