High‐finesse nanoscale displacement sensor based on fiber optic polymer probe

2021 ◽  
Author(s):  
Fuzheng Zhang ◽  
Qijing Lin ◽  
Na Zhao
Keyword(s):  
Fiber Optic ◽  
Displacement Sensor ◽  
High Finesse

A White-Light Interferometry for the Measurement of High-Finesse Fiber Optic EFPI Sensors

2014 ◽  
Vol 26 (21) ◽  
pp. 2138-2141 ◽  
Author(s):  
Zhen Wang ◽  
Yi Jiang ◽  
Wenhui Ding ◽  
Ran Gao
Keyword(s):  
White Light ◽  
Fiber Optic ◽  
White Light Interferometry ◽  
High Finesse

Fiber optic displacement sensor used in railway turnout contact monitoring system

2013 ◽  
Author(s):  
Hongbin Xu ◽  
Wentao Zhang ◽  
Yanliang Du ◽  
Feng Li ◽  
Fang Li
Keyword(s):  
Monitoring System ◽  
Fiber Optic ◽  
Displacement Sensor ◽  
Railway Turnout

A scanning force microscope with a fiber‐optic‐interferometer displacement sensor

1991 ◽  
Vol 62 (5) ◽  
pp. 1280-1284 ◽  
Author(s):  
P. J. Mulhern ◽  
T. Hubbard ◽  
C. S. Arnold ◽  
B. L. Blackford ◽  
M. H. Jericho
Keyword(s):  
Fiber Optic ◽  
Displacement Sensor ◽  
Scanning Force Microscope ◽  
Scanning Force ◽  
Fiber Optic Interferometer

scholarly journals Pendulum-Type Hetero-Core Fiber Optic Accelerometer for Low-Frequency Vibration Monitoring

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2528 ◽  
Author(s):  
Hiroshi Yamazaki ◽  
Ichiro Kurose ◽  
Michiko Nishiyama ◽  
Kazuhiro Watanabe
Keyword(s):  
Fiber Optics ◽  
Electromagnetic Interference ◽  
Large Scale ◽  
Fiber Optic ◽  
Low Frequency ◽  
Fiber Optic Sensor ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Displacement Sensor ◽  
Core Fiber

In this paper, a novel pendulum-type accelerometer based on hetero-core fiber optics has been proposed for structural health monitoring targeting large-scale civil infrastructures. Vibration measurement is a non-destructive method for diagnosing the failure of structures by assessing natural frequencies and other vibration patterns. The hetero-core fiber optic sensor utilized in the proposed accelerometer can serve as a displacement sensor with robustness to temperature changes, in addition to immunity to electromagnetic interference and chemical corrosions. Thus, the hetero-core sensor inside the accelerometer measures applied acceleration by detecting the rotation of an internal pendulum. A series of experiments showed that the hetero-core fiber sensor linearly responded to the rotation angle of the pendulum ranging within (−6°, 4°), and furthermore the proposed accelerometer could reproduce the waveform of input vibration in a frequency band of several Hz order.

scholarly journals Fiber optic displacement sensor based on a double-reflecting OTDR technique

2015 ◽  
Vol 57 (6) ◽  
pp. 1312-1315 ◽  
Author(s):  
Maria Thereza M. Rocco Giraldi ◽  
Cindy S. Fernandes ◽  
Marta S. Ferreira ◽  
Marco J. de Sousa ◽  
Pedro Jorge ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Displacement Sensor

Liquid refractometer based mirrorless fiber optic displacement sensor

2016 ◽  
Vol 247 ◽  
pp. 227-233 ◽  
Author(s):  
Ganesan Krishnan ◽  
Noriah Bidin ◽  
Mundzir Abdullah ◽  
Muhammad Fakaruddin Sidi Ahmad ◽  
Mohammad Aizat Abu Bakar ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Displacement Sensor

A Fiber-Optic Displacement Sensor Based on High-Precision Differential Phase Measurement

2018 ◽  
Vol 36 (18) ◽  
pp. 4046-4050 ◽  
Author(s):  
Ke Chen ◽  
Min Guo ◽  
Yang Yang ◽  
Kang Liu ◽  
Wanjin Cai ◽  
...  
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Phase Measurement ◽  
Displacement Sensor ◽  
Differential Phase

scholarly journals High precision machining of a displacement sensor for helicoidal motions

2021 ◽  
Author(s):  
Zeina ELRAWASHDEH ◽  
Philippe REVEL ◽  
Christine PRELLE ◽  
Frédéric LAMARQUE
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Geometric Model ◽  
Translational Motion ◽  
Surface Characteristics ◽  
Measurement Range ◽  
Linear Displacement ◽  
Displacement Sensor ◽  
Fiber Optic Probes

Abstract This research study presents the design and the high precision manufacture procedure of a fiber-optic displacement sensor. It is composed of two fiber-optic probes associated with a structure of a cones’ grating. The sensor is characterized by its ability to measure the linear displacement for an axis performing a helicoidal motion. This motion has been demonstrated on a high precision lathe; where the spindle provided the rotational motion, associated to a translational motion on the linear stage. This allowed to obtain the two simultaneous motions. The displacement of the translational stage is measured by the sensor in real time.Firstly, a highly precise geometric model of the reflector part for the sensor was developed. This model provided a specific geometry for the cones-assembled grating, which has been precisely manufactured. The geometric parameters and the surface characteristics of each step in the fabricated grating were both identified in situ on the lathe. The agreement between simulation and experimental results is excellent. The performances of the fiber-optic displacement sensor were identified in-situ on the lathe. The analysis of the voltage output signals from the two fiber-optic probes is used to measure the grating displacement. The unbalanced rotation due to non-centered axes was also characterized. The sensor provided a micrometric resolution, on a measurement range of more than one centimeter.

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