Theoretical Analysis of Slow-light in π-phase-shifted fiber Bragg grating for sensing applications

2019 ◽  
Author(s):  
Krishna Mohan Dwivedi ◽  
Gaurav Trivedi ◽  
Tomasz Osuch ◽  
Karel Juryca ◽  
Jan Pidanic
Keyword(s):  
Theoretical Analysis ◽  
Fiber Bragg Grating ◽  
Slow Light ◽  
Bragg Grating ◽  
Sensing Applications

All-fiber hybrid fiber Bragg grating cavity for multi-parameter sensing applications

2009 ◽  
Author(s):  
D. Paladino ◽  
G. Quero ◽  
A. Iadicicco ◽  
C. Caucheteur ◽  
P. Mégret ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Hybrid Fiber ◽  
Sensing Applications

scholarly journals Fluorinated Polyimide-Film Based Temperature and Humidity Sensor Utilizing Fiber Bragg Grating

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5469
Author(s):  
Xiuxiu Xu ◽  
Mingming Luo ◽  
Jianfei Liu ◽  
Nannan Luan
Keyword(s):  
Fiber Bragg Grating ◽  
Humidity Sensor ◽  
Field Tests ◽  
Polyimide Film ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Sensing Applications ◽  
Fluorinated Polyimide ◽  
Temperature And Humidity ◽  
Fluoride Doping

We propose and demonstrate a temperature and humidity sensor based on a fluorinated polyimide film and fiber Bragg grating. Moisture-induced film expansion or contraction causes an extra strain, which is transferred to the fiber Bragg grating and leads to a humidity-dependent wavelength shift. The hydrophobic fluoride doping in the polyimide film helps to restrain its humidity hysteresis and provides a short moisture breathing time less than 2 min. Additionally, another cascaded fiber Bragg grating is used to exclude its thermal crosstalk, with a temperature accuracy of ±0.5 °C. Experimental monitoring over 9000 min revealed a considerable humidity accuracy better than ±3% relative humidity, due to the sensitized separate film-grating structure. The passive and electromagnetic immune sensor proved itself in field tests and could have sensing applications in the electro-sensitive storage of fuel, explosives, and chemicals.

Fiber-Bragg-Grating Based Single Axial Mode Fabry-Perot Interferometer and Its Strain and Acceleration Sensing Applications

2016 ◽  
Vol 34 (9) ◽  
pp. 2241-2250 ◽  
Author(s):  
Toshihiko Yoshino ◽  
Yasukazu Sano ◽  
Daisuke Ota ◽  
Keiichi Fujita ◽  
Takahiro Ikui
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Axial Mode ◽  
Sensing Applications ◽  
Fabry Perot

8.5-fm resonances in an amplified slow-light fiber Bragg grating for high-precision metrology

2020 ◽  
Author(s):  
Pierre-Baptiste Vigneron ◽  
Tommy Boilard ◽  
Anna Broome ◽  
Enkeleda Balliu ◽  
Martin Bernier ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Precision ◽  
Slow Light ◽  
Bragg Grating ◽  
Precision Metrology

High temperature resistant fiber Bragg grating lasers for sensing applications

2009 ◽  
Author(s):  
Bai-Ou Guan ◽  
Yang Zhang ◽  
Hong-Jun Wang ◽  
Da Chen ◽  
Hwa-Yaw Tam
Keyword(s):  
High Temperature ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Sensing Applications

Finite Element Analysis on Stress and Strain of Protected Fiber Bragg Grating

2010 ◽  
Vol 148-149 ◽  
pp. 1639-1642
Author(s):  
Jian Feng Xie
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Analysis ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Stress And Strain ◽  
Analysis Software ◽  
Element Analysis ◽  
Varied Temperature

The stresses and strains on the protected FBG and protected layer under varied temperature were analyzed in theory. In order to verify the theoretical analysis of stress and strain,a finite element analysis software(ANSYS) was used to simulate the stresses and strains on the protected FBG and protected layer. Both simulation and theoretical analysis are show that the strain and stress on protected layer in r direction decreases with the increasing of radius(r), while the strain and stress in direction increases with the increasing of radius(r) . The results of theoretical analysis matches the ones form simulations well.

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