Fiber optic sensor for dual measurement of temperature and strain using a combined fluorescence lifetime decay and fiber Bragg grating technique

2001 ◽  
Vol 72 (8) ◽  
pp. 3186-3190 ◽  
Author(s):  
S. A. Wade ◽  
D. I. Forsyth ◽  
K. T. V. Grattan ◽  
Q. Guofu
Keyword(s):  
Fiber Bragg Grating ◽  
Fluorescence Lifetime ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Optic Sensor ◽  
Fluorescence Lifetime Decay ◽  
Lifetime Decay ◽  
Dual Measurement

scholarly journals Graphene Enhanced Leaky Mode Resonance in Tilted Fiber Bragg Grating: A New Opportunity for Highly Sensitive Fiber Optic Sensor

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 26641-26651 ◽  
Author(s):  
Zhihong Li ◽  
Zhuying Yu ◽  
Yubing Shen ◽  
Xiukai Ruan ◽  
Yuxing Dai
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Leaky Mode ◽  
Bragg Grating ◽  
Optic Sensor ◽  
Highly Sensitive

scholarly journals Using a Fiber Loop and Fiber Bragg Grating as a Fiber Optic Sensor to Simultaneously Measure Temperature and Displacement

Sensors ◽  
2013 ◽  
Vol 13 (5) ◽  
pp. 6542-6551 ◽  
Author(s):  
Yao-Tang Chang ◽  
Chih-Ta Yen ◽  
Yue-Shiun Wu ◽  
Hsu-Chih Cheng
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Optic Sensor ◽  
Fiber Loop

High-performance hybrid Raman/fiber Bragg grating fiber-optic sensor based on simplex cyclic pulse coding

2013 ◽  
Vol 38 (4) ◽  
pp. 471 ◽  
Author(s):  
M. Taki ◽  
F. Zaidi ◽  
I. Toccafondo ◽  
T. Nannipieri ◽  
A. Signorini ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Performance ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Optic Sensor

Multipoint refractive index and temperature fiber optic sensor based on cascaded no core fiber-fiber Bragg grating structures

2017 ◽  
Vol 56 (2) ◽  
pp. 027102 ◽  
Author(s):  
Cheng Zhang ◽  
Shan Xu ◽  
Junfa Zhao ◽  
Hongqiang Li ◽  
Hua Bai ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Optic Sensor ◽  
Core Fiber

A Photonic Crystal Fiber and Fiber Bragg Grating-Based Hybrid Fiber-Optic Sensor System

2012 ◽  
Vol 12 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Ginu Rajan ◽  
Manjusha Ramakrishnan ◽  
Yuliya Semenova ◽  
Karolina Milenko ◽  
Piotr Lesiak ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Fiber Bragg Grating ◽  
Photonic Crystal Fiber ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Hybrid Fiber ◽  
Crystal Fiber ◽  
Optic Sensor

scholarly journals Guided wave-based system for real-time cure monitoring of composites using piezoelectric discs and phase-shifted fiber Bragg gratings

2018 ◽  
Vol 53 (7) ◽  
pp. 969-979 ◽  
Author(s):  
Tyler B Hudson ◽  
Nicolas Auwaijan ◽  
Fuh-Gwo Yuan
Keyword(s):  
Physical Properties ◽  
Fiber Bragg Grating ◽  
Real Time ◽  
Fiber Optic ◽  
Guided Wave ◽  
Fiber Optic Sensor ◽  
State Transitions ◽  
Bragg Grating ◽  
Cure Cycle ◽  
Cure Monitoring

A real-time, in-process cure monitoring system employing a guided wave-based concept for carbon fiber reinforced polymer composites was developed. The system included a single piezoelectric disc that was bonded to the surface of the composite for excitation, and an embedded phase-shifted fiber Bragg grating for sensing. The phase-shifted fiber Bragg grating almost simultaneously measured both quasi-static strain and the ultrasonic guided wave-based signals throughout the cure cycle. A traditional FBG was also used as a base for evaluating the high sensitivity of the phase-shifted fiber Bragg grating sensor. Composite physical properties (degree of cure and glass transition temperature) were correlated to the amplitude and time of arrival of the guided wave-based measurements during the cure cycle. In addition, key state transitions (gelation and vitrification) were identified from the experimental data. The physical properties and state transitions were validated using cure process modeling software (e.g. RAVEN®). This system demonstrated the capability of using an embedded phase-shifted fiber Bragg grating to sense a wide bandwidth of signals during cure. The distinct advantages of a fiber optic-based system include multiplexing of multiple gratings along a single optical fiber, small size compared to piezoelectric sensors, ability to embed or surface mount, utilization in harsh environments, electrically passive operation, and electromagnetic interference (EMI) immunity. The embedded phase-shifted fiber Bragg grating fiber optic sensor can monitor the entire life-cycle of the composite structure from curing, post-cure/assembly, and in-service creating “smart structures”.

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