Journal ArticleDOI
High-sensitivity strain sensor based on in-fiber improved Fabry–Perot interferometer
Shen Liu,Yiping Wang,Changrui Liao,Guanjun Wang,Zhengyong Li,Qiao Wang,Jiangtao Zhou,Kaiming Yang,Xiaoyong Zhong,Jing Zhao,Jian Tang +10 more
TLDR
A high-sensitivity strain sensor based on an in-fiber Fabry-Perot interferometer (FPI) with an air cavity, which was created by splicing together two sections of standard single-mode fibers, is demonstrated.Abstract:
We demonstrated a high-sensitivity strain sensor based on an in-fiber Fabry–Perot interferometer (FPI) with an air cavity, which was created by splicing together two sections of standard single-mode fibers. The sensitivity of this strain sensor was enhanced to 6.0 pm/μe by improving the cavity length of the FPI by means of repeating arc discharges for reshaping the air cavity. Moreover, such a strain sensor has a very low temperature sensitivity of 1.1 pm/°C, which reduces the cross sensitivity between tensile strain and temperature.read more
Citations
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Journal ArticleDOI
Hybrid structured fiber-optic Fabry-Perot interferometer for simultaneous measurement of strain and temperature
TL;DR: A hybrid structured Fabry-Perot interferometer (FPI) embedded in the middle of a fiber line for simultaneous measurement of axial strain and temperature is fabricate and experimentally demonstrated.
Journal ArticleDOI
High-sensitivity strain sensor based on in-fiber rectangular air bubble.
Shen Liu,Kaiming Yang,Yiping Wang,Junle Qu,Changrui Liao,Jun He,Zhengyong Li,Guolu Yin,Bing Sun,Jiangtao Zhou,Guanjun Wang,Jian Tang,Jing Zhao +12 more
TL;DR: A unique rectangular air bubble is demonstrated by means of splicing two sections of standard single mode fibers together and tapering the splicing joint to develop a promising high-sensitivity strain sensor based on Fabry-Perot interference.
Journal ArticleDOI
Ultrasensitive strain sensor based on Vernier- effect improved parallel structured fiber-optic Fabry-Perot interferometer
TL;DR: Experimental results show that the proposed parallel structured fiber-optic FPI can provide an ultra-high strain sensitivity of -43.2 pm/με, which is 4.6 times higher than that of a single open-cavity FPI.
Journal ArticleDOI
Highly sensitive fiber optic temperature and strain sensor based on an intrinsic Fabry-Perot interferometer fabricated by a femtosecond laser.
TL;DR: A simple, but highly sensitive sensor based on two intrinsic Fabry-Perot interferometers inscribed in a standard single-mode optical fiber that allows real-time and in situ strain and temperature monitoring under harsh environments.
Journal ArticleDOI
Optical Fiber Temperature Sensors and Their Biomedical Applications.
TL;DR: Achievements in the area of temperature optical fiber sensors, different configurations of the sensors reported over the last five years, and application of this technology in biomedical applications are reviewed.
References
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Journal ArticleDOI
Interferometric Fiber Optic Sensors
Byeong Ha Lee,Youngho Kim,Kwan Seob Park,Joo Beom Eom,Myoung Jin Kim,Byung Sup Rho,Hae Young Choi +6 more
TL;DR: Each type of interferometric sensor is reviewed in terms of operating principles, fabrication methods, and application fields and some specific examples of recently reported interferometeric sensor technologies are presented in detail to show their large potential in practical applications.
Journal ArticleDOI
Optical fiber Fabry-Perot interferometer cavity fabricated by femtosecond laser micromachining and fusion splicing for refractive index sensing
TL;DR: A fiber in-line Fabry-Perot interferometer cavity sensor for refractive index measurement is demonstrated, simple in configuration, easy for fabrication and reliable in operation due to extremely low temperature cross sensitivity.
Journal ArticleDOI
In-Line Fiber Optic Interferometric Sensors in Single-Mode Fibers
TL;DR: This paper reviews two kinds of typical in-line fiber optic interferometers formed in single-mode fibers fabricated with different post-processing techniques and some recently reported specific technologies for fabricating such fiber opticinterferometers are presented.
Journal ArticleDOI
Microbubble based fiber-optic Fabry-Perot interferometer formed by fusion splicing single-mode fibers for strain measurement.
TL;DR: An all-fiber optical Fabry-Perot interferometer (FPI) strain sensor whose cavity is a microscopic air bubble is demonstrated and strain and temperature sensitivities are studied experimentally.
Journal ArticleDOI
Microfiber in-line Mach–Zehnder interferometer for strain sensing
TL;DR: An elegant way of achieving an ultracompact optical fiber in-line Mach-Zehnder interferometer is to create an inner air cavity in a section of microfiber that splits the light propagating in the fiber into two beams, resulting in an interference fringe pattern.