A Nondestructive Measurement Method of Optical Fiber Young’s Modulus Based on OFDR

Sensors

Cailing Fu¹  Bin Du¹  Jun He¹  Pengfei Li¹  Huajian Zhong¹  Yanjie Meng¹  Yiping Wang¹  Chao Du¹  Kuikui Guo¹  Lei Wang² 

[1] Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China;

关键词: optical frequency domain reflectometry;    single mode fiber;    Young’s modulus;    nondestructive measurement;   

DOI  :  10.3390/s22041450

来源: DOAJ

【 摘 要 】

A nondestructive measurement method based on an Optical frequency domain reflectometry (OFDR) was demonstrated to achieve Young’s modulus of an optical fiber. Such a method can be used to measure, not only the averaged Young’s modulus within the measured fiber length, but also Young’s modulus distribution along the optical fiber axis. Moreover, the standard deviation of the measured Young’s modulus is calculated to analyze the measurement error. Young’s modulus distribution of the coated and uncoated single mode fiber (SMF) samples was successfully measured along the optical fiber axis. The average Young’s modulus of the coated and uncoated SMF samples was 13.75 ± 0.14, and 71.63 ± 0.43 Gpa, respectively, within the measured fiber length of 500 mm. The measured Young’s modulus distribution along the optical fiber axis could be used to analyze the damage degree of the fiber, which is very useful to nondestructively estimate the service life of optical fiber sensors immersed into smart engineer structures.

【 授权许可】

Unknown