An 8-TDM Inline fiber Fabry-Perot Sensor Array Based on Ultra-Weak Fiber Bragg Gratings

2015 ◽  
Author(s):  
Peng Jiang ◽  
Lina Ma ◽  
Zhengliang Hu ◽  
Yongming Hu
Keyword(s):  
Sensor Array ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fabry Perot

scholarly journals Tactile Sensor Array with Fiber Bragg Gratings in Quasi-Distributed Sensing

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Marcelo A. Pedroso ◽  
Lucas H. Negri ◽  
Marcos A. Kamizi ◽  
José L. Fabris ◽  
Marcia Muller
Keyword(s):  
Differential Evolution ◽  
Compressive Sensing ◽  
Sensor Array ◽  
Fiber Bragg Gratings ◽  
Tactile Sensor ◽  
Bragg Gratings ◽  
Central Position ◽  
Reconstruction Method ◽  
Sensing System ◽  
Tactile Sensor Array

This work describes the development of a quasi-distributed real-time tactile sensing system with a reduced number of fiber Bragg grating-based sensors and reports its use with a reconstruction method based on differential evolution. The sensing system is comprised of six fiber Bragg gratings encapsulated in silicone elastomer to form a tactile sensor array with total dimensions of 60 × 80 mm, divided into eight sensing cells with dimensions of 20 × 30 mm. Forces applied at the central position of the sensor array resulted in linear response curves for the gratings, highlighting their coupled responses and allowing the application of compressive sensing. The reduced number of sensors regarding the number of sensing cells results in an undetermined inverse problem, solved with a compressive sensing algorithm with the aid of differential evolution method. The system is capable of identifying and quantifying up to four different loads at four different cells with relative errors lower than 10.5% and signal-to-noise ratio better than 12 dB.

Wide-Dynamic-Range High-Resolution Fiber Fabry–Perot Interferometric Sensor With Chirped Fiber Bragg Gratings

2013 ◽  
Vol 31 (19) ◽  
pp. 3176-3180 ◽  
Author(s):  
Atsushi Wada ◽  
Keisuke Ikuma ◽  
Masakatsu Syoji ◽  
Satoshi Tanaka ◽  
Nobuaki Takahashi
Keyword(s):  
High Resolution ◽  
Dynamic Range ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Wide Dynamic Range ◽  
Fabry Perot ◽  
Interferometric Sensor ◽  
Chirped Fiber Bragg Gratings
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