光学学报, 2011, 31 (s1): s100209, 网络出版: 2011-06-23  

光子晶体光纤熔接损耗的理论和实验研究 下载: 516次

Theoretical and Experimental Research on Splice Losses of Photonic Crystal Fibers
作者单位
国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
摘要
理论和实验研究了光子晶体光纤之间的熔接损耗。采用有限元法(FEM)结合完美匹配层(PML),对包层为三角形栅格结构的2根相同的光子晶体光纤(PCF)之间的熔接损耗进行了理论计算分析。结果表明,当2根光纤的光轴对准时,固定其中一根光纤,绕光轴旋转另一根光纤会导致模场失配,从而产生旋转损耗。旋转损耗随旋转角度周期振荡,且与空气孔直径相比,孔间距对旋转损耗的影响较大。优化选择熔接机参数,避免空气孔塌缩和熔接点处产生气泡,实验测量了这2根相同光子晶体光纤之间熔接后的最大和最小光功率输出,得到其熔接损耗差与理论计算得到的最大旋转损耗一致。实验进一步降低了光子晶体光纤之间的熔接损耗。
Abstract
The splice losses of photonic crystal fibers (PCFs) are theoretically and experimentally studied. For the two same PCFs with the triangular lattice, the splice losses are theoretically investigated by using finite element method (FEM) with perfectly matched layer (PML). The results show that the fundamental mode field mismatch induces the rotation losses with rotating one of the two PCFs when two optical axes are coincident. The rotation losses oscillate with increasing rotation angle, and the pitch between two nearest air holes has greater impact on the rotation losses than the air hole diameter. Optimizing the parameters of the arc fiber splicer, avoiding the air hole collapse and bubble generation, the rotation losses are experimentally investigated for two same PCFs. The measured rotation loss is coincident with the simulation results. Experiments can further reduce the splice losses of PCFs.

徐中南, 陈子伦, 奚小明, 侯静, 刘泽金. 光子晶体光纤熔接损耗的理论和实验研究[J]. 光学学报, 2011, 31(s1): s100209. Xu Zhongnan, Chen Zilun, Xi Xiaoming, Hou Jing, Liu Zejin. Theoretical and Experimental Research on Splice Losses of Photonic Crystal Fibers[J]. Acta Optica Sinica, 2011, 31(s1): s100209.

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