中国激光, 2008, 35 (9): 1350, 网络出版: 2008-09-09   

小芯径折射率引导型光子晶体光纤的制备和研究

Fabrication and Study on the Small-Core Index-Guiding Photonic Crystal Fiber
作者单位
燕山大学信息科学与工程学院,燕山大学红外光纤与传感研究所, 河北 秦皇岛 066004
摘要
介绍一种小芯径折射率引导型光子晶体光纤(PCF)的拉制方法。制备出的光纤纤芯周围第一层空气孔发生形变,呈柚子形,其芯径为1.7 μm,孔间距Λ和空气孔直径d分别为3.4 μm和2.8 μm。由于光纤结构的特殊性,采用有限元法在200~1600 nm波段对其基模有效折射率、色散系数、有效模场面积以及非线性系数进行了数值模拟计算。经过理论计算,这种光纤在所研究的波段具有极高的非线性系数且表现为反常色散,这些特性十分有利于超连续谱的产生。在测量了光纤的损耗、色散等基本特性后,选取损耗较小且位于光纤反常色散区域,中心波长为800 nm的飞秒激光作为光源,将不同功率的超短激光脉冲耦合入光纤,对这种小芯径折射率引导型光子晶体光纤产生超连续谱的过程进行了测量和分析。
Abstract
A way of fabricating a small-core index-guiding photonic crystal fiber (PCF) is introduced. The first ring of the air holes around the core is deformed, the shape of which is similar to the grapefruit, and the diameter of the core is 1.7 μm; the pitch and diameter of the air hole are 3.4 μm and 2.8 μm, respectively. Because of the special structure of the fiber, the effective refractive indices, dispersion coefficients of the fundamental modes, effective areas and nonlinear coefficients of the fiber are calculated by finite element method from 200 nm to 1600 nm. The results show that, in this wavelength range, the nonlinear coefficients of this fiber are extremely high and dispersion coefficients are positive. These characteristics are of benefit to the supercontinuum generating. After measuring the dispersion and loss properties of the fiber, the laser operating wavelength in 800 nm is chosen to be the light source because the loss in this wavelength is lower and the central wavelength of the pulse is in the range of abnormal dispersion. The femtosecond pulses with different powers are coupled into this small-core index-guiding photonic crystal fiber. The supercontinuum generating in the fiber is detected and analyzed.

孟佳, 侯蓝田, 周桂耀, 高飞, 米艳. 小芯径折射率引导型光子晶体光纤的制备和研究[J]. 中国激光, 2008, 35(9): 1350. Meng Jia, Hou Lantian, Zhou Guiyao, Gao Fei, Mi Yan. Fabrication and Study on the Small-Core Index-Guiding Photonic Crystal Fiber[J]. Chinese Journal of Lasers, 2008, 35(9): 1350.

本文已被 11 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!