Distributed measurement of stress-induced birefringence in SMF embedded within composites

ZHANG Zhiwu; MA Minglei; CHANG Wenhui; DU Dongsheng; TANG Zhichao; FANG Ting; ZHOU Junnan; YAO Penghui

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Distributed measurement of stress-induced birefringence in SMF embedded within composites

Optical Sensing and Measurement | 更新时间：2026-01-05

- Distributed measurement of stress-induced birefringence in SMF embedded within composites
- OPTICAL TECHNIQUE Vol. 51, Issue 6, Pages: 736-742(2025)
- 作者机构：
  
  1.张家口卷烟厂有限责任公司，河北张家口 075000
  2.河北省科学院，河北石家庄 050000
  3.河北省机电一体化中试基地有限公司，河北石家庄 050000
  4.河北省智能测控技术创新中心，河北石家庄 050000
  5.河北大学光信息技术创新中心，河北保定 071000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN29
- Received：27 June 2025，
  
  Revised：2025-08-13，
  
  Published：20 November 2025
- 稿件说明：
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张志武,马明磊,常文慧等.内嵌SMF复合材料形变应力诱导双折射分布式测量[J].光学技术,2025,51(06):736-742.

ZHANG Zhiwu,MA Minglei,CHANG Wenhui,et al.Distributed measurement of stress-induced birefringence in SMF embedded within composites[J].OPTICAL TECHNIQUE,2025,51(06):736-742.
张志武,马明磊,常文慧等.内嵌SMF复合材料形变应力诱导双折射分布式测量[J].光学技术,2025,51(06):736-742. DOI：

ZHANG Zhiwu,MA Minglei,CHANG Wenhui,et al.Distributed measurement of stress-induced birefringence in SMF embedded within composites[J].OPTICAL TECHNIQUE,2025,51(06):736-742. DOI：

摘要

光纤中的双折射作为表征多种物理量的敏感载体，为了验证双折射可以表征横向应力，文章基于偏振态分析技术，将二元磁光PSG和PSA融入OFDR技术中组成双折射测量系统，首先对比分析了PSG和PSA在双折射测量中的原理和优势，然后通过施加压力的方式引入压力诱导线双折射，测量值与理论值平均误差为6.20%，验证了测量系统的准确性。基于此将SMF嵌入到不同制作工艺缺陷的GFRP内，在弯曲形变半径为6cm时内部SMF受横向应力诱导双折射的多次测量平均值为4.91×10

-6

，排除了制作工艺缺陷对测量的影响，验证了双折射表征横向应力的能力，这对从事GFRP材料弯曲形变以及弯曲形变引入横向应力的研究人员和科学家提供了新的思路。

Abstract

Optical fiber birefringence serves as a sensitive probe for characterizing various physical quantities. To validate its capability in characterizing transverse stress

A binary magneto-optic Polarization State Generator （PSG） and Polarization State Analyzer （PSA） are integrated into Optical Frequency Domain Reflectometry （OFDR）to form a birefringence measurement system based on polarization state analysis technology. First

the principles and advantages of PSG and PSA in birefringence measurement are comparatively analyzed. Transverse stress is then experimentally induced through applied pressure

generating stress-induced linear birefringence in a Single-Mode Fiber （SMF）. The measured birefringence values exhibited a mean error of 6.20% compared to theoretical predictions

confirming the system’s measurement accuracy. Building upon this foundation

a SMF is embedded within Glass Fiber Reinforced Polymer （GFRP） composites containing intentional fabrication defects. Under a bending deformation radius of 6 cm

the average value of transverse stress-induced birefringence measured multiple times within the embedded SMF is 4.91 × 10⁻⁶. This result effectively excludes the influence of manufacturing defets on the measurement

thereby validating the capability of birefringence to characterize transverse stress. This work provides a new insight for researchers and scientists studying bending deformation in GFRP materials and the transverse stresses introduced by such deformation.

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references

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