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| 基于组合透镜与渐变折射率光纤改进激光器耦合效率的新方法 | |
| 引用本文： | 延凤平,刘鹏,谭中伟,陶沛琳,李琦,彭万敬,冯亭,谭思宇.基于组合透镜与渐变折射率光纤改进激光器耦合效率的新方法[J].物理学报,2012,61(16):164202-164202. |
| 作者姓名： | 延凤平 刘鹏 谭中伟 陶沛琳 李琦 彭万敬 冯亭 谭思宇 |
| 作者单位： | 1. 北京交通大学光波技术研究所,北京100044 全光网络与现代通信网教育部重点实验室,北京100044 2. 邢台学院物理系,邢台,054001 3. 北京交通大学光波技术研究所,北京,100044 |
| 基金项目： | 国家自然科学基金 (批准号: 60877042, 61077069); 河北省高等学校技术研究指导项目(批准号：Z2011201) 和邢台市科学技术与发展计划(批准号：2011ZZ052-4)资助的课题. |
| 摘 要： | 提出一种利用组合透镜系统与渐变折射率光纤相结合改进激光 器管芯到单模尾纤耦合性能的新方法. 这种方法首先利用组合透镜系统对具有像 散的激光器输出光束进行整形, 然后采用渐变折射率光纤对整形后的光束进行聚焦处理, 并将处理后的的光束耦合进入普通单模光纤. 利用Jones矩阵理论分析表明, 采用这种方法可以得到86%的功率耦合效率, 1 dB插入损耗对应的渐变折射率光纤长度、 横向偏移和倾斜角容差分别为60 μm, 30 μm和2.4°, 且结构简单, 便于操作, 特别适合于大功率激射的激光模块到单模光纤的耦合. 对于提高激光器输出功率, 改善光束质量具有重要意义. |
| 关 键 词： | 像散 组合透镜 光束整形 耦合 |
| 收稿时间： | 2011-12-05 |
A novel method of improving coupling effiency of laser diode based on synthesized lens with graduaed index fiber |
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| Yan Feng-Ping,Liu Peng,Tan Zhong-Wei,Tao Pei-Lin,Li Qi,Peng Wan-Jing,Feng Ting,Tan Si-Yu.A novel method of improving coupling effiency of laser diode based on synthesized lens with graduaed index fiber[J].Acta Physica Sinica,2012,61(16):164202-164202. | |
| Authors: | Yan Feng-Ping Liu Peng Tan Zhong-Wei Tao Pei-Lin Li Qi Peng Wan-Jing Feng Ting Tan Si-Yu |
| Institution: | 1. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China;2. Key Laboratry of All Optical Networks and Advanced Communication Networks, Ministry of Education, Beijing 100044, China;3. Physics Department of Xingtai College, Xingtai 054001, China |
| Abstract: | In this paper,a novel method of improving coupling effiency of laser diode to single mode fiber based on synthesized lens with graduaed index fiber is provided.The output beam with large astigmatism from laser diode is shaped and focused via synthesized lens and graduaed index fiber,and then couplied into single mode fiber.Analysis using Jones matrix theory indicates that the power coupler effect of 86%is obtained from output port of the single mode fiber.The tolerances for fiber length of graduaed index fiber,radial offset and tilt degree are 60μm,30μm and 2.4 degree respectivily for 1 dB insert loss.This method can be used for improving the quality of optical beam and increasing output power for laser diode to single mode fiber with a large output optical power. |
| Keywords: | astigmatism synthesized lens beam shaping coupling |
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