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利用掺锗方法进一步增强光子晶体光纤的非线性特性
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Enhanced nonlinearity in photonic crystal fiber by germanium doping in the core region

摘    要
由于二氧化锗材料的非线性折射率高于石英,因此可以通过在纤芯中掺杂二氧化锗来进一步提高纯硅光子晶体光纤的非线性系数。采用全矢量有限单元方法,本文理论计算和分析了掺杂前后光子晶体光纤的非线性特性。通过对比发现,后者的非线性系数得到了大幅提高;且当掺杂区域半径一定时,对特定波长,光纤非线性系数随折射率差的增加表现出线性增长趋势。此外,还讨论了掺杂区域半径对光纤非线性特性的影响。
标    签 微结构光纤,非线性系数,掺锗,非线性折射率   060.2270   060.2400   060.4370  
 
Abstract
Germanium doping in silica can be used as a method for nonlinearity enhancement. Properties of the enhanced nonlinearity in photonic crystal fiber (PCF) with a GeO2-doped core are investigated theoretically by using all-vector finite element method. Numerical result shows that the nonlinear coefficient of PCF is greatly enhanced with increasing doping concentration, furthermore, optimal radius of the doped region should be considered for the desired operating wavelength.

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收稿日期 2007/9/28

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备注This work was supported by the "973" Program of China and the Tianjin Natural Science Foundation (No. 2003CB314906, 06YFJZJC00300). T. Sun's e-mail address is nksuntingting@gmail.com.

引用该论文: Tingting Sun,Guiyun Kai,Zhi Wang,Shuzhong Yuan,Xiaoyi Dong. Enhanced nonlinearity in photonic crystal fiber by germanium doping in the core region[J]. 中国光学快报, 2008, 6(2): 93~95


被引情况:


【1】王伟,侯蓝田,刘兆伦,周桂耀, "光子晶体光纤色散分解为材料和波导分量的误差研究",Chinese Optics Letters 7, 768-770(2009)

【2】Xi Liu,Lihong Han,Xiaoyu Jia,Jinlong Wang,Fangyong Yu,Zhongyuan Yu, "Design of hybrid-core PCF with nearly-zero flattened dispersion and high nonlinearity",Chinese Optics Letters 13, 10602-10606(2015)

【3】侯金钗,李曙光,刘司英,甄海龙, "光子晶体光纤包层中气孔和掺杂介质柱尺寸对光纤带隙特性的影响",中国激光 36, 663-667(2009)

【4】陈明阳,张永康,于荣金, "双芯光子晶体光纤中的波长选择性耦合及其应用研究",Chinese Optics Letters 7, 390-392(2009)

【5】何忠蛟, "基于缺陷层结构布拉格光纤的带阻滤波器",Chinese Optics Letters 8, 259-261(2010)

【6】孙伟民,付枫华,刘晓颀,姜宇,张建中, "结构偏差对保偏光子晶体光纤色散特性的影响",中国激光 36, 884-888(2009)

【7】孙伟民,刘晓颀,付枫华,张建中, "光纤嵌入式多芯光子晶体光纤制作",Chinese Optics Letters 6, 715-717(2008)

【8】何忠蛟, "单缺陷和双缺陷的高双折射压缩型椭圆孔光子晶体光纤",Chinese Optics Letters 7, 387-389(2009)



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