Optical-fiber based hydrogen sensing at high temperature using ALD coated oxide sensing layers

2021 ◽  
Author(s):  
Paul R. Ohodnicki ◽  
Jeffrey K. Wuenschell ◽  
Michael P. Buric ◽  
Yulin Liu ◽  
Jung-Kun Lee
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Hydrogen Sensing

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

On the mechanism of hydrogen sensing with SiO2 modificated high temperature Ga2O3 sensors

2001 ◽  
Vol 78 (1-3) ◽  
pp. 202-207 ◽  
Author(s):  
T Weh ◽  
J Frank ◽  
M Fleischer ◽  
H Meixner
Keyword(s):  
High Temperature ◽  
Hydrogen Sensing

Wavelength division multiplexed optical fiber hydrogen sensing system for multi-point measurement

2016 ◽  
Vol 45 (8) ◽  
pp. 822006
Author(s):  
李建中 Li Jianzhong ◽  
刘振清 Liu Zhenqing ◽  
雷江波 Lei Jiangbo ◽  
刘 俊 Liu Jun
Keyword(s):  
Optical Fiber ◽  
Wavelength Division ◽  
Point Measurement ◽  
Wavelength Division Multiplexed ◽  
Hydrogen Sensing ◽  
Sensing System

Tip Packaged High-Temperature Miniature Sensor Based on Suspended Core Optical Fiber

2020 ◽  
pp. 1-1
Author(s):  
Huaiyin Su ◽  
Yundong Zhang ◽  
Kai Ma ◽  
Yong-Peng Zhao ◽  
Changqiu Yu
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Miniature Sensor
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