High-precision large-range optical fiber interferometric piezometer and its wide band interferometry for water pressure measurement

2022 ◽  
pp. 1-1
Author(s):  
Shun Wang ◽  
Yaowen Yang ◽  
Jiyin Cao ◽  
Liang Zhang ◽  
Lipi Mohanty ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Precision ◽  
Pressure Measurement ◽  
Large Range ◽  
Water Pressure ◽  
Wide Band

A Novel Optical Fiber Displacement Measurement System

2014 ◽  
Vol 599-601 ◽  
pp. 684-688 ◽  
Author(s):  
Kai Sen Guan ◽  
Yu He Li ◽  
Yan Xiang Chen ◽  
Yong Rong Qiu
Keyword(s):  
Optical Fiber ◽  
High Precision ◽  
Measurement System ◽  
Simple Structure ◽  
Large Range ◽  
Measurement Model ◽  
Displacement Measurement ◽  
Displacement System ◽  
Novel Design ◽  
Structure Light

In order to meet the displacement measurement’s need for high precision and large measuring range, a novel design of optical fiber displacement system is proposed. Optical fiber is applied to the displacement measurement field with its simple structure, light weight, cheap cost and high precision. A displacement measurement model based on transmissive optical fiber is established, and theoretical calculation and simulation are conducted to verify the accuracy of the model. Displacement measuring experiments are completed and the results show that the transmissive optical fiber displacement measurement system has high measuring accuracy with the relative error less than 0.2% over a large range.

scholarly journals High-precision optical fiber pressure sensor using frequency-modulated continuous-wave laser interference

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025038
Author(s):  
Lang Bai ◽  
Gang Zheng ◽  
Bin Sun ◽  
Xiongxing Zhang ◽  
Qiming Sheng ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Precision ◽  
Pressure Sensor ◽  
Continuous Wave ◽  
Continuous Wave Laser ◽  
Laser Interference ◽  
Wave Laser

Air pressure measurement of circular thin plate using optical fiber multimode interferometer

Measurement ◽  
2021 ◽  
pp. 109784
Author(s):  
Yufang Bai ◽  
Jie Zeng ◽  
Jiwei Huang ◽  
Zhenfeng Yan ◽  
Yaxing Wu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Thin Plate ◽  
Pressure Measurement ◽  
Air Pressure ◽  
Circular Thin Plate

Wide-band Fabry-Perot-like filters in optical fiber

1995 ◽  
Vol 7 (1) ◽  
pp. 78-80 ◽  
Author(s):  
G.E. Town ◽  
K. Sugden ◽  
J.A.R. Williams ◽  
I. Bennion ◽  
S.B. Poole
Keyword(s):  
Optical Fiber ◽  
Wide Band ◽  
Fabry Perot

Autocorrelation Phase Measurement of Spread Spectrum Signal for High Precision Indoor Microwave Positioning

2015 ◽  
Vol 734 ◽  
pp. 31-39
Author(s):  
Wen Yang Cai ◽  
Gao Yong Luo
Keyword(s):  
High Precision ◽  
Spread Spectrum ◽  
Phase Measurement ◽  
Wide Band ◽  
Cost Effective ◽  
Local Area ◽  
Indoor Positioning ◽  
60 Ghz ◽  
Positioning Method ◽  
Increasing Demand

The increasing demand for high precision indoor positioning in many public services has urged research to implement cost-effective systems for a rising number of applications. However, current systems with either short-range positioning technology based on wireless local area networks (WLAN) and ZigBee achieving meter-level accuracy, or ultra-wide band (UWB) and 60 GHz communication technology achieving high precision but with high cost required, could not meet the need of indoor wireless positioning. This paper presents a new method of high precision indoor positioning by autocorrelation phase measurement of spread spectrum signal utilizing carrier frequency lower than 1 GHz, thereby decreasing power emission and hardware cost. The phase measurement is more sensitive to the distance of microwave transmission than timing, thus achieving higher positioning accuracy. Simulation results demonstrate that the proposed positioning method can achieve high precision of less than 1 centimeter decreasing when various noise and interference added.

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