Design and fabrication of a device for quick measuring the mode-field radius of single-mode optical fibers

YANG Gao-bo; XU Tie-feng; ZHOU Ya-xun; YANG Yan

doi:10.13756/j.gtxyj.2004.03.016

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Design and fabrication of a device for quick measuring the mode-field radius of single-mode optical fibers

- Design and fabrication of a device for quick measuring the mode-field radius of single-mode optical fibers
- Study on Optical communication Issue 3, Pages: 55-57(2004)
- 作者机构：
  
  1. 宁波大学光通信与网络技术研究所
  2. 宁波大学光通信与网络技术研究所浙江宁波　315211
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2004.03.016
  CLC： TN818
- Published：2004，
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[1]杨高波,徐铁峰,周亚训,杨燕.单模光纤模场半径快速测量仪的设计及制作[J].光通信研究,2004(03):55-57.

YANG Gao-bo, XU Tie-feng, ZHOU Ya-xun, et al. Design and fabrication of a device for quick measuring the mode-field radius of single-mode optical fibers. [J]. (3):55-57(2004)
[1]杨高波,徐铁峰,周亚训,杨燕.单模光纤模场半径快速测量仪的设计及制作[J].光通信研究,2004(03):55-57. DOI： 10.13756/j.gtxyj.2004.03.016.

YANG Gao-bo, XU Tie-feng, ZHOU Ya-xun, et al. Design and fabrication of a device for quick measuring the mode-field radius of single-mode optical fibers. [J]. (3):55-57(2004) DOI： 10.13756/j.gtxyj.2004.03.016.

摘要

用FPGA可编程控制器来控制步进电机带动放置在光纤端面远场区域的一个透光圆孔屏障沿光轴线移动

从而调节PIN光电管接收到的光信号强度.用锁相放大器来提高光电信号的信噪比

信号被快速采样后输入FPGA控制器

经过数据处理后显示所测单模光纤的模场半径.测量仪具备较好的测量精度和重复精度.

Abstract

A barrier with circular-hole is placed in far-field area of a fiber

and the source light’s intensity received by PIN tube is adjusted by moving the barrier along the optical anxis with a stepper motor

which is controlled by a FPGA chip. A phase-locked amplifier is used to improve the signal-to-noise ratio of photoelectricity signal

and the FPGA chip is also utilized to incept the sampling signal and calculate the mode-field radius of single-mode optical fibers quickly. The device has good measuring and repeating precision.

关键词

单模光纤模场半径远场

Keywords

single-mode optical fibersmode-field radiusfar-field area

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