光子晶体光纤布拉格光栅谐振特性的研究  

Research on Resonance Properties of Photonic Crystal Fiber Bragg Grating

作　　者：黄从利[1] 黄勇林[1] 

机构地区：[1]南京邮电大学光电工程学院,江苏南京210046

出　　处：《激光与光电子学进展》2012年第4期49-52,共4页Laser & Optoelectronics Progress

基　　金：南京邮电大学引进人才项目(NY207140)资助课题

摘　　要：利用模式理论和传输矩阵法,对基于包层空气孔排布为正八边形对称结构的光子晶体光纤光栅(PCFG)的模式截止特性以及谐振特性进行了研究,得出了此种光子晶体光纤光栅的模式截止条件和可传导的模式,并利用得到的模式截止条件,提出利用相位匹配条件设计相应的光纤光栅周期来得到满足需要的谐振波长,同时给出了谐振峰的反射谱图。研究表明,通过合理选择此种光子晶体光纤光栅的结构参数,可以实现需要的单模传输以及定制波长处的主谐振峰的谐振。所研究的基于包层空气孔排布为正八边形对称结构的锗掺杂光子晶体光纤光栅有望更好地应用于光子晶体光纤光栅传感领域。The modal cut-off properties and resonant properties of Ge-doped photonic crystal fiber Bragg grating（PCFBG） with regular octagonal cladding air holes are investigated by using the mode coupling theory and the transmission matrix method,and the modal cut-off condition and the mode of transmission are given.To meet the need of the resonant wavelength,a method is designed by changing the period of the grating based on the phase matching conditions.The reflection spectrum of the grating simulation result is obtained.It is found that with properly chosen structural parameters,needed single-mode transmission and resonance with tailored main resonant peak can be realized using the PCFBG.This kind of PCFBG can thus be better applied to fiber sensing areas.

关 键 词：光纤光学 光子晶体光纤光栅 模式截止 谐振波长 反射谱 

分 类 号：O436[机械工程—光学工程]