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紫外-可见光谱水质检测系统的多束LED光纤耦合研究

Research on Multi-Beam LED and Fiber Coupling of UV-Visible Spectroscopy Water Quality Detection System

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摘要

针对紫外-可见光谱水质检测系统单个LED光源输出功率低、光束质量差的问题, 提出了一种多束紫外LED光源与光纤合束耦合的结构设计方案。运用ZEMAX光学分析软件开展了仿真设计研究, 针对紫外LED光源与光纤耦合发散角较大的问题, 设计了非球面准直透镜, 准直后发散角为0.403 mrad;针对光束尺寸与光纤的匹配问题, 进行了消色差双分离聚焦耦合透镜的设计。实验结果表明, 合束LED光束汇聚的弥散斑的RMS尺寸为186.412 μm, GEO点尺寸为290.071 μm, 光束中95%以上的能量集中在300 μm以内, 实现了多束LED光源与光纤的高效耦合。

Abstract

Aiming at the problems of low output power and poor optical quality of single LED in UV-Visible water quality monitoring system, a structural design of multi-beam UV LED light source coupled with optical fiber was proposed. Optical software of ZEMAX was used to make simulations, and the aspheric collimating lens was designed for the problem of large coupling divergence angle between the UV LED light source and fiber. The divergence angle after collimation is 0.403 mrad. To solve the matching problem between the beam size and the optical fiber, the achromatic double separation and focusing lens was designed. Experimenal results show the RMS size of LED beam combination is 186.412 μm, the GEO point is 290.071 μm, and more than 95% of the energy in the beam is concentrated within 300 μm, which realizes a high coupling efficiency of multi-beam LED with the optical fiber.

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中图分类号:TN23

DOI:10.16818/j.issn1001-5868.2017.06.025

所属栏目:光电技术应用

基金项目:重庆市教委科学技术研究项目(KJ1709201);重庆理工大学“星火计划”项目(2015XH06);重庆理工大学研究生创新基金项目(YCX2016225).

收稿日期:2017-08-22

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赵明富:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆 400054重庆理工大学 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
邓思兴:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆 400054重庆理工大学 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
汤斌:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆 400054重庆理工大学 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
唐平:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆 400054重庆理工大学 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054
陈海军:重庆理工大学 光纤传感与光电检测重庆市重点实验室, 重庆 400054重庆理工大学 重庆市现代光电检测技术与仪器重点实验室, 重庆 400054

联系人作者:汤斌(tangbin@cqut.edu.cn)

备注:赵明富(1964-), 男, 重庆人, 工学博士, 教授, 研究方向为计算机应用、信息获取技术与处理;

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引用该论文

ZHAO Mingfu,DENG Sixing,TANG Bin,TANG Ping,CHEN Haijun. Research on Multi-Beam LED and Fiber Coupling of UV-Visible Spectroscopy Water Quality Detection System[J]. Semiconductor Optoelectronics, 2017, 38(6): 883-887

赵明富,邓思兴,汤斌,唐平,陈海军. 紫外-可见光谱水质检测系统的多束LED光纤耦合研究[J]. 半导体光电, 2017, 38(6): 883-887

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