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3D refractive index measurements of special optical fibers

机译：特殊光纤的3D折射率测量

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摘要

A digital holographic microscopic chromatography-based approach with considerably improved accuracy, simplified configuration and performance stability is proposed to measure three dimensional refractive index of special optical fibers. Based on the approach, a measurement system is established incorporating a modified Mach-Zehnder interferometer and lab-developed supporting software for data processing. In the system, a phase projection distribution of an optical fiber is utilized to obtain an optimal digital hologram recorded by a CCD, and then an angular spectrum theory-based algorithm is adopted to extract the phase distribution information of an object wave. The rotation of the optic fiber enables the experimental measurements of multi-angle phase information. Based on the filtered back projection algorithm, a 3D refraction index of the optical fiber is thus obtained at high accuracy. To evaluate the proposed approach, both PANDA fibers and special elliptical optical fiber are considered in the system. The results measured in PANDA fibers agree well with those measured using S14 Refractive Index Profiler, which is, however, not suitable for measuring the property of a special elliptical fiber. (C) 2016 Elsevier Inc. All rights reserved.
机译：提出了一种基于数字全息显微色谱的方法，该方法可显着提高精度，简化配置和性能稳定性，以测量特殊光纤的三维折射率。基于此方法，建立了一个测量系统，该系统结合了改进的Mach-Zehnder干涉仪和实验室开发的用于数据处理的支持软件。在该系统中，利用光纤的相位投影分布来获得由CCD记录的最佳数字全息图，然后采用基于角谱理论的算法提取物波的相位分布信息。光纤的旋转使得能够进行多角度相位信息的实验测量。因此，基于滤波后的反投影算法，可以高精度地获得光纤的3D折射率。为了评估所提出的方法，系统中同时考虑了PANDA光纤和特殊的椭圆形光纤。在PANDA纤维中测得的结果与使用S14折射率分析仪测得的结果非常吻合，但是，它不适合用于测量特殊椭圆形纤维的性能。 （C）2016 Elsevier Inc.保留所有权利。

著录项

  • 来源
    《Optical fiber technology》 |2016年第9期|65-73|共9页
  • 作者

    Yan Cheng; Huang Su-Juan; Miao Zhuang; Chang Zheng; Zeng Jun-Zhang; Wang Ting-Yun;

  • 作者单位

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

    Shanghai Univ, Sch Commun & Informat Engn, Key Lab Special Fiber Opt & Opt Access Networks, Shanghai 200072, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Digital holography; Phase distribution; 3D refractive index; Special optical fiber; Filtered back projection algorithm;

    机译：数字全息相位分布3D折射率特殊光纤滤波反投影算法;

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