| 基于热扩芯光纤的光纤准直器特性研究 |
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| 引用本文： | 李榴,李毅,郑秋心,沈雨剪,黄毅泽,朱慧群,佟国香,方宝英,周晟,张宇明,孙若曦,梁倩,严梦,丁杰,王锋,覃源.基于热扩芯光纤的光纤准直器特性研究[J].激光与光电子学进展,2012(6):77-82. |
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| 作者姓名： | 李榴 李毅 郑秋心 沈雨剪 黄毅泽 朱慧群 佟国香 方宝英 周晟 张宇明 孙若曦 梁倩 严梦 丁杰 王锋 覃源 |
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| 作者单位： | 上海理工大学光电信息与计算机工程学院;上海市现代光学系统重点实验室;五邑大学薄膜与纳米材料研究所 |
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| 基金项目： | 国家863计划(2006AA03Z348);教育部科学技术研究重点项目(207033);上海市科学技术委员会科技攻关计划(06DZ11415);上海市教育委员会科研创新重点项目(10ZZ94);上海领军人才培养计划资助课题 |
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| 摘 要： | 为了提高光纤和光器件之间的耦合效率,设计了由热扩芯光纤和自聚焦透镜构成的新型热扩芯光纤准直器。理论上分析了热扩芯光纤准直器的基本结构参数与光学特性的关系以及由3种失配导致的耦合插入损耗。研究发现,热扩芯光纤准直器的耦合特性与自聚焦透镜的参数有关,热扩芯光纤准直器在轴向间距和角度偏差上的耦合失配容限明显优于普通光纤准直器,横向位移损耗则高于普通光纤准直器。采用模场半径为15.4μm的热扩芯光纤与自聚焦常数为0.295mm-1的自聚焦透镜制备了热扩芯光纤准直器,并对热扩芯光纤准直器因3种失配导致的耦合插入损耗进行了理论和实验比较,结果表明实验数据与理论吻合较好,说明所设计的热扩芯光纤准直器可用于长距离光耦合和旋转连接器件。
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| 关 键 词： | 光纤光学 热扩芯光纤 自聚焦透镜 光纤准直器 耦合插入损耗 |
Characteristics of Fiber Collimator Based on Thermally Expanded Core Fiber |
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| Li Liu,Li Yi,Zheng Qiuxin,Shen Yujian,Huang Yize,Zhu Huiqun,Tong Guoxiang,Fang Baoying,Zhou Sheng,Zhang Yuming,Sun Ruoxi,Liang Qian,Yan Meng,Ding Jie,Wang Feng,Qin Yuan.Characteristics of Fiber Collimator Based on Thermally Expanded Core Fiber[J].Laser & Optoelectronics Progress,2012(6):77-82. |
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| Authors: | Li Liu Li Yi Zheng Qiuxin Shen Yujian Huang Yize Zhu Huiqun Tong Guoxiang Fang Baoying Zhou Sheng Zhang Yuming Sun Ruoxi Liang Qian Yan Meng Ding Jie Wang Feng Qin Yuan |
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| Affiliation: | 1(1School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China 2Shanghai Key Laboratory of Modern Optical System,Shanghai 200093,China 3Institute of Thin Films and Nano-Materials,Wuyi University,Jiangmen,Guangdong 529020,China) |
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| Abstract: | In order to improve the coupling efficiency between fibers and optical devices,a new thermally expanded core fiber collimator is designed.It consists of thermally expanded core(TEC) fiber and gradient index(GRIN) lens.The relation between TEC fiber collimator and its optical characteristics is analyzed.The coupling insertion losses caused by three kinds of misalignments are calculated.The results show that the coupling characteristics of TEC fiber collimator is related to the GRIN lens parameters,the lateral and angular coupling tolerances have been greatly improved compared with single-mode fiber collimators and the loss of axial offset is higher than that of single-mode fiber collimators.We fabricate the TEC fiber collimator by using the TEC fiber with 15.4 μm mode-field radius and the GRIN lens with 0.295 mm-1 gradient constant.The coupling insertion losses measured are consistent well with the theoretical results.The TEC fiber collimator can be used for long working-distance optical coupling and rotary connection devices. |
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| Keywords: | fiber optics thermally expanded core fiber gradient index lens fiber collimator coupling insertion loss |
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