Journal
APPLIED OPTICS
Volume 59, Issue 30, Pages 9476-9481Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.405670
Keywords
-
Categories
Funding
- Shaanxi Provincial Education Department of China [20JS122]
- Graduate Student Innovation Fund of Xi'an Shiyou University [YSC19211033]
- Natural Science Basic Research Plan in Shaanxi Province of China [2013JM8032]
- National Natural Science Foundation of China [61805197]
Ask authors/readers for more resources
A novel seven-core fiber (SCF)-based sensor capable of simultaneous measurement of temperature and strain was proposed and experimentally demonstrated. The sensor consists of a fiber Bragg grating (FBG) and a SCF-based Mach-Zehnder interferometer (ME). The MZI is formed by splicing a short section of SCF between two single-mode fibers (SMFs), and in the meantime, two fiber tapers that act as light splitter and coupler are formed at both ends of the SCF by the fusion splicing method. In addition, the FBG with a central wavelength of 1547.98 nm is cascaded at the end of one fiber taper, and thus simultaneous measurement of temperature and strain can be realized. The experiment result shows that the SCF-based MZI is only sensitive to temperature and has the higher temperature sensitivity of 93.11 pm/degrees C, while the FBG is sensitive to temperature and strain with sensitivities of 11.46 pm/degrees C and 0.627 pm/mu epsilon, respectively. The corresponding temperature and strain resolutions of the sensor are 0.21 degrees C and 27.95 mu epsilon, respectively. The proposed sensor has the advantages of simple fabrication and high repeatability and has potential applications in many fields such as engineering machinery and building structure health monitoring. (C) 2020 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available