A miniature fiber Bragg grating pressure sensor for in-vivo sensing applications

2012 ◽  
Author(s):  
David Hsiao-Chuan Wang ◽  
Andrew Abbott ◽  
Simon A. Maunder ◽  
Neil G. Blenman ◽  
John W. Arkwright
Keyword(s):  
Fiber Bragg Grating ◽  
Pressure Sensor ◽  
Bragg Grating ◽  
Sensing Applications ◽  
In Vivo Sensing

Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution

2015 ◽  
Vol 54 (9) ◽  
pp. 096104 ◽  
Author(s):  
Vengal Rao Pachava ◽  
Srimannarayana Kamineni ◽  
Sai Shankar Madhuvarasu ◽  
Venkata Reddy Mamidi
Keyword(s):  
Fiber Bragg Grating ◽  
Pressure Sensor ◽  
Bragg Grating ◽  
Hydraulic Pressure ◽  
Enhanced Resolution

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

Fiber optic pressure sensor using a fiber Bragg grating

1998 ◽  
Author(s):  
Chuan S. Tjin ◽  
Jianzhong Hao ◽  
Rahul Malik
Keyword(s):  
Fiber Bragg Grating ◽  
Pressure Sensor ◽  
Fiber Optic ◽  
Bragg Grating

A Pressure Sensor Using Fiber Bragg Grating

2001 ◽  
Vol 20 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Swee Chuan Tjin ◽  
Jianzhong Hao ◽  
Yu-Zhi Lam ◽  
Yoong Ching Ho ◽  
Beng Koon Ng
Keyword(s):  
Fiber Bragg Grating ◽  
Pressure Sensor ◽  
Bragg Grating

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.

Design and development of pressure sensor based on Fiber Bragg Grating (FBG) for ocean applications

2020 ◽  
Vol 90 (3) ◽  
pp. 30501 ◽  
Author(s):  
Venkata Satya Chidambara Swamy Vaddadi ◽  
Saidi Reddy Parne ◽  
Sanjeev Afzulpurkar ◽  
Shivanand Prabhu Desai ◽  
Vijeesh Vadakke Parambil
Keyword(s):  
Stainless Steel ◽  
Fiber Bragg Grating ◽  
Pressure Sensor ◽  
Experimental Studies ◽  
Steel Tube ◽  
Bragg Grating ◽  
Stainless Steel Tube ◽  
Air Cavity ◽  
Compact Design ◽  
Column Pressure

A Fiber Bragg Grating (FBG) based sensors has been designed, fabricated and is being prototyped to measure the ocean water column pressure. To measure the pressure variation, a compact design is made by using stainless steel disks and rubber “O” rings in a closed air cavity setup. The pressure in static freshwater column ranging from 0 to 0.04 MPa was gauged, using closed air cavity setup. Also, another “T” shaped design, for testing, has been made of solid stainless-steel tube with the open-air cavity for an extended range of pressure sensing. By using an oil pressure pump and open-air cavity setup, pressure values from 0 to 0.5 MPa have been measured. In both setups same thickness of copper, stainless steel diaphragms are used to measure the pressure. Range of measurements has been carried out to test both the setups. Results indicate that the pressure sensitivity in closed air cavity setup is 24.95 nm/MPa with linearity 99.72%. In the open-air cavity, setup is 16.22 nm/MPa with linearity 99.34% is achieved. Simulation and experimental studies are performed to validate the efficacy of the designed FBG pressure sensor.

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