scholarly journals A sapphire optical fiber high-temperature vibration sensor

2021 ◽  
Author(s):  
Yang Cui ◽  
Yi Jiang ◽  
Yutong Zhang ◽  
Xinxing Feng ◽  
Jie Hu ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Vibration Sensor

scholarly journals Simultaneous Measurement of Temperature and Refractive Index Using High Temperature Resistant Pure Quartz Grating Based on Femtosecond Laser and HF Etching

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1028
Author(s):  
Na Zhao ◽  
Qijing Lin ◽  
Kun Yao ◽  
Fuzheng Zhang ◽  
Bian Tian ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Femtosecond Laser ◽  
Optical Fiber ◽  
Temperature Response ◽  
High Sensitivity ◽  
Xrd Analysis ◽  
Refractive Index Sensor ◽  
Compact Structure ◽  
Fluid Analysis

The optical fiber temperature and refractive index sensor combined with the hollow needle structure for medical treatment can promote the standardization of traditional acupuncture techniques and improve the accuracy of body fluid analysis. A double-parameter sensor based on fiber Bragg grating (FBG) is developed in this paper. The sensor materials are selected through X-ray diffraction (XRD) analysis, and the sensor sensing principle is theoretically analyzed and simulated. Through femtosecond laser writing pure silica fiber, a high temperature resistant wavelength type FBG temperature sensor is obtained, and the FBG is corroded by hydrofluoric acid (HF) to realize a high-sensitivity intensity-type refractive index sensor. Because the light has dual characteristics of energy and wavelength, the sensor can realize simultaneous dual-parameter sensing. The light from the lead-in optical fiber is transmitted to the sensor and affected by temperature and refractive-index; then, the reflection peak is reflected back to the lead-out fiber by the FBG. The high temperature response and the refractive index response of the sensor were measured in the laboratory, and the high temperature characteristics of the sensor were verified in the accredited institute. It is demonstrated that the proposed sensor can achieve temperature sensing up to 1150 °C with the sensitivity of 0.0134 nm/°C, and refractive sensing over a refractive range of 1.333 to 1.4027 with the sensitivity of −49.044 dBm/RIU. The sensor features the advantages of two-parameter measurement, compact structure, and wide temperature range, and it exhibits great potential in acupuncture treatment.

A Miniaturized Optical Fiber Tip High-Temperature Sensor Based on Concave-Shaped Fabry–Perot Cavity

2019 ◽  
Vol 31 (1) ◽  
pp. 35-38 ◽  
Author(s):  
Chen Zhu ◽  
Yiyang Zhuang ◽  
Bohong Zhang ◽  
Roman Muhammad ◽  
Philip P. Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Temperature Sensor ◽  
Fabry Perot ◽  
High Temperature Sensor

Optical fiber gratings for structural health monitoring in high-temperature environments

2007 ◽  
Author(s):  
Richard J. Black ◽  
Kelvin Chau ◽  
George Chen ◽  
Behzad Moslehi ◽  
Levy Oblea ◽  
...  
Keyword(s):  
High Temperature ◽  
Structural Health Monitoring ◽  
Optical Fiber ◽  
Health Monitoring ◽  
Fiber Gratings ◽  
Structural Health ◽  
Optical Fiber Gratings

Vibration Sensing and Impact Location Detection Using Optical Fiber Vibration Sensor

2000 ◽  
Vol 183-187 ◽  
pp. 661-666
Author(s):  
Y.C. Yang ◽  
W. Hwang ◽  
Hyun Chul Park ◽  
Kyung Seop Han
Keyword(s):  
Optical Fiber ◽  
Vibration Sensor ◽  
Impact Location ◽  
Vibration Sensing ◽  
Location Detection

An etched optical fiber as a vibration sensor

2012 ◽  
Vol 55 (1) ◽  
pp. 75-79
Author(s):  
Putha Kishore ◽  
Dantala Dinakar ◽  
P. Vengal Rao ◽  
K. Srimannarayana
Keyword(s):  
Optical Fiber ◽  
Vibration Sensor

scholarly journals Fiber Optic Vibration Sensors

2021 ◽  
Author(s):  
Putha Kishore ◽  
Dantala Dinakar ◽  
Manchineellu Padmavathi
Keyword(s):  
Optical Fiber ◽  
Measurement Method ◽  
Fiber Optic ◽  
Sensor Response ◽  
Vibration Sensor ◽  
Vibration Measurement ◽  
Sensor Design ◽  
Plastic Optical Fiber ◽  
Intensity Modulated ◽  
Vibration Sensors

The sensors presented in this chapter are fiber optic intensity modulated vibrations sensors which are non-contact (extrinsic sensor) to the vibrating object. Three sensors presented make use of non-contact vibration measurement method with plastic fiber using distinct designs, improvement of the sensor response and advantages of one sensor over the other for diverse applications. First discussed about dual plastic optical fiber vibration sensor design and its response. Secondly, discussed about 1x2 fused coupler plastic optical fiber vibration sensor design with advantages over the first one. Finally, discussed about the 2x2 fused coupler plastic optical fiber vibration sensor design along with advantages than other two methods. At the end reported the final results with comparison.

Miniature structure optimization of Small-diameter FBG based one-dimensional optical fiber vibration sensor

2021 ◽  
pp. 1-1
Author(s):  
Han Song ◽  
Enzhong Song ◽  
Wang Peng ◽  
Boyi Wang ◽  
Yi Liu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Small Diameter ◽  
Structure Optimization ◽  
Vibration Sensor ◽  
One Dimensional

Permanent Distributed Temperature Monitoring Of Oil Reservoirs Using Optical Fiber For High Temperature Applications

2009 ◽  
Author(s):  
Adriana Lucia C. Triques ◽  
Hardy L.C. Pereira Pinto ◽  
Ana Paula S.C. Santana ◽  
Ronaldo G. Izetti
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Temperature Monitoring ◽  
Oil Reservoirs ◽  
Temperature Applications
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