Journal ArticleDOI
Sub-micron silica diaphragm-based fiber-tip Fabry-Perot interferometer for pressure measurement.
TLDR
A sub-micron silica diaphragm-based fiber-tip Fabry-Perot interferometer for pressure sensing applications is demonstrated, with a high pressure sensitivity and low temperature cross-sensitivity, suitable for high sensitivity pressure sensing in harsh environments.Abstract:
We demonstrate a sub-micron silica diaphragm-based fiber-tip Fabry–Perot interferometer for pressure sensing applications. The thinnest silica diaphragm, with a thickness of ∼320 nm, has been achieved by use of an improved electrical arc discharge technique. Such a sub-micron silica diaphragm breaks the sensitivity limitation imposed by traditional all-silica Fabry–Perot interferometric pressure sensors and, as a result, a high pressure sensitivity of ∼1036 pm/MPa at 1550 nm and a low temperature cross-sensitivity of ∼960 Pa/°C are achieved when a silica diaphragm of ∼500 nm in thickness is used. Moreover, the all-silica spherical structure enhanced the mechanical strength of the micro-cavity sensor, making it suitable for high sensitivity pressure sensing in harsh environments.read more
Citations
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Journal ArticleDOI
Ultra-high sensitivity Fabry-Perot interferometer gas refractive index fiber sensor based on photonic crystal fiber and Vernier effect
TL;DR: Experimental results show that the proposed sensor can provide an ultra-high RI sensitivity of 30899 nm/RIU, which has potential applications in fields such as gas concentration analyzing and humidity monitoring.
Journal ArticleDOI
Simultaneous measurement of pressure and temperature by employing Fabry-Perot interferometer based on pendant polymer droplet
Bing Sun,Yiping Wang,Junle Qu,Changrui Liao,Guolu Yin,Jun He,Jiangtao Zhou,Jian Tang,Shen Liu,Zhengyong Li,Yingjie Liu +10 more
TL;DR: The proposed Fabry-Perot interferometer exhibits a wavelength shift of the interference fringes that corresponds to a temperature sensitivity of 249 pm/°C and a pressure sensitivity of 1130 pm/MPa, respectively, around the wavelength of 1560 nm.
Journal ArticleDOI
Highly-sensitive gas pressure sensor using twin-core fiber based in-line Mach-Zehnder interferometer
Zhengyong Li,Changrui Liao,Yiping Wang,Lei Xu,Dongning Wang,Xiaopeng Dong,Shen Liu,Qiao Wang,Kaiming Yang,Jiangtao Zhou +9 more
TL;DR: A Mach-Zehnder interferometer based on a twin-core fiber that exhibited a high gas pressure sensitivity and a low temperature cross-sensitivity makes it very suitable for highly-sensitive gas pressure sensing in harsh environments.
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.
References
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Journal ArticleDOI
Recent progress in fiber-optic extrinsic Fabry–Perot interferometric sensors
TL;DR: In this article, the optical amplification technology is adopted into the EFPI sensor system to enhance the interferometric signal considerably, and both spatial-frequency multiplexing and coarse-wavelength division multiple-xing technologies are demonstrated for the Fizeau sensor in order to realize the measurement of multiple parameters such as displacement, transverse load, static strain, temperature, and vibration.
Journal ArticleDOI
High-sensitivity fiber-tip pressure sensor with graphene diaphragm
TL;DR: A miniature fiber-tip pressure sensor was built by using an extremely thin graphene film as the diaphragm, which acts as a light reflector and forms a low finesse Fabry-Perot interferometer.
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
Highly sensitive long-period fiber-grating strain sensor with low temperature sensitivity.
TL;DR: A long-period fiber-grating sensor with a high strain sensitivity and low temperature sensitivity is fabricated by use of focused CO(2) laser beam to carve periodic grooves on a large- mode-area photonic crystal fiber to reduce the cross-sensitivity between strain and temperature.
Journal ArticleDOI
Miniature fiber-optic pressure sensor
Yizheng Zhu,Anbo Wang +1 more
TL;DR: In this article, a fiber-optic pressure sensor was fabricated by simple techniques involving only fusion splicing, cleaving, and wet chemical etching, which measured only 125 /spl mu/m in diameter.