Uniform axial tension effect of electroless plating Ni-P coated fiber Bragg grating

RAO Chun-fang; ZHANG Hua; FENG Yan; XIAO Li-li; YE Zhi-qing

doi:10.3788/OPE.20122006.1194

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Uniform axial tension effect of electroless plating Ni-P coated fiber Bragg grating

更新时间：2020-08-12

- Uniform axial tension effect of electroless plating Ni-P coated fiber Bragg grating
- Optics and Precision Engineering Vol. 20, Issue 6, Pages: 1194-1200(2012)
- 作者机构：
  
  1. 南昌大学机电工程学院机器人与焊接自动化重点实验室,江西南昌,330031
  2. 江西师范大学物理与通信电子学院光电子与通信重点实验室,江西南昌,330022
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122006.1194
  CLC： TN253
- Received：09 February 2012，
  
  Revised：05 March 2012，
  
  Published Online：10 June 2012，
  
  Published：10 June 2012
- 稿件说明：
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饶春芳, 张华, 冯艳, 肖丽丽, 叶志清. 化学镀Ni-P光纤布拉格光栅的均匀轴向拉力响应[J]. 光学精密工程, 2012,20(6): 1194-1200

RAO Chun-fang, ZHANG Hua, FENG Yan, XIAO Li-li, YE Zhi-qing. Uniform axial tension effect of electroless plating Ni-P coated fiber Bragg grating[J]. Editorial Office of Optics and Precision Engineering, 2012,20(6): 1194-1200
饶春芳, 张华, 冯艳, 肖丽丽, 叶志清. 化学镀Ni-P光纤布拉格光栅的均匀轴向拉力响应[J]. 光学精密工程, 2012,20(6): 1194-1200 DOI： 10.3788/OPE.20122006.1194.

RAO Chun-fang, ZHANG Hua, FENG Yan, XIAO Li-li, YE Zhi-qing. Uniform axial tension effect of electroless plating Ni-P coated fiber Bragg grating[J]. Editorial Office of Optics and Precision Engineering, 2012,20(6): 1194-1200 DOI： 10.3788/OPE.20122006.1194.

摘要

研究了化学镀Ni-P涂敷后光纤布拉格光栅(ENFBG)的均匀轴向拉力响应特性。利用其轴对称特性

分析了光栅的应力及应变状态;采用有限元方法数值分析了光栅应变

并实验验证了数值分析结果。数值分析表明:处于纤芯处的光栅被均匀拉伸

剪应变远小于正应变

可忽略;正应变与轴向拉力成正比

ENFBG中心波长的变化正比于均匀轴向拉力变化;但由于化学镀层与光纤力学特性的差异

镀层对FBG轴向均匀拉力响应起去敏作用。当化学镀层厚度为7.25 μm时

ENFBG的均匀轴向拉力实测灵敏度为12.45 pm/MPa

Abstract

To research the uniform axial tension effect of an Electroless plating Ni-P coated Fiber Bragg Grating (ENFBG)

the stress and strain properties of the ENFBG were analyzed based on its axial symmetry.The finite element method was used for theoretical calculations

then it was verified by following experiments. Theoretical calculation shows that under uniform axial tension

the core of the ENFBG is drawn uniformly

the shearing strain is far less than normal strain and can be omitted.The normal strain is proportional to the axial tension

and the change of center wavelength of ENFBG is proportional to that of the tension too. However

because of the difference of mechanic parameters between electroless plating Ni-P coating and optical fiber

the metal coating reduces the uniform axial tension sensitivity of the FBG. In sensor experiment

when the thickness of the coating is 7.25 μm

the sensitivity is 12.45 pm/MPa

-square is 0.999 6

and the theoretical calculation value is 12.744 pm/MPa. Moreover

the sensitivity is decreased with the increase of the thickness of metal coating. The ENFBG is an excellent uniform axial tension sensor

because its center wavelength shows high linearity to uniform axial tension and its metal coating can provide good protection.

关键词

Keywords

references

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