J4 ›› 2012, Vol. 29 ›› Issue (5): 629-636.

• 光通信 • 上一篇    下一篇

可见光通信中菲涅耳透镜仿真设计与优化

徐宁1 徐丹彤1 杨庚2 孙晓芸1   

  1. 1 南京邮电大学光电工程学院,江苏 南京 210046; 
    2 南京邮电大学计算机学院,江苏 南京 210046
  • 收稿日期:2011-09-13 修回日期:2012-09-02 出版日期:2012-09-28 发布日期:2012-09-02
  • 通讯作者: 徐宁 (1960-),女,南京人,副教授,硕士,从事光通信与技术等方面的研究和教学. E-mail:xuning@njput.edu.cn
  • 基金资助:

    国家重点基础研究发展规划课题(973)(2011CB302903);国家自然科学基金资助项目(60873231,60977069);南京邮电大学青蓝项目(NY210041)

Simulating and optimizing of Fresnel lens in visible light communications

XU Ning1, XU Dan-tong1, YANG Geng2,SUN Xiao-yun 1   

  1. 1College of Opto-Electronic Engineering, Nanjing University of Posts & Telecommunications, Nanjing  210003, China;
    2 College of Computer Science, Nanjing University of Posts & Telecommunications, Nanjing, 210003, China
  • Received:2011-09-13 Revised:2012-09-02 Published:2012-09-28 Online:2012-09-02

摘要:

可见光通信是一种在白光LED技术上发展起来的新兴光无线通信技术,具有发射功率高、无电磁干扰等优点。相比常规透镜,在可见光通信系统的光接收天线上,使用菲涅耳透镜可以降低成本,减小透镜厚度和接收焦距。本文利用Zemax软件对菲涅耳透镜进行了设计、仿真与优化,首先分析了透镜设计技术要求,提出了基于菲涅耳透镜的设计与仿真方法及参数设置,然后对几类透镜进行了仿真与性能分析,在此基础上进行了透镜设计优化。结果表明,在光垂直入射且探测器尺寸为1.5×1.5mm2情况下,可保证F数<1,并得到优化的透镜结构和参数,使集光效率达到90%,为基于菲涅耳透镜的天线设计提供了理论与应用基础。

关键词: 光通信, 菲涅耳透镜, 设计优化, Zemax软件系统

Abstract:

Visible light communication is a novel wireless optical communication technology based on white LED fabricating techniques. It has some advantages, such as the high emitting power, no electromagnetic interference and so on. Compared with traditional lens, Fresnel lens can be used in design of an optical reception antenna to reduce cost, thickness of lens and focal length. This paper addresses the designing, simulating and optimizing of Fresnel lens. It analyzes the technique requirements and presents methods for design, simulation and parameters setting. It gives also some simulating results and performance analysis. By using optimization, it can reach a good performance. It obtains a light collection rate at about 90% and ensures the F number<1 under the condition where the size of the detector is 1.5×1.5mm2, which could support the antenna design.

Key words: visible light communication, Fresnel lens, design optimization, Zemax package

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