Highly sensitive and selective optical fiber fluorescence sensor for lead ion detection in water using corrugated long period fiber grating

2014 ◽  
Author(s):  
Yasser Chiniforooshan ◽  
Jianjun Ma ◽  
Wojtek J. Bock ◽  
Wenhui Hao ◽  
Zhi Yuan Wang
Keyword(s):  
Optical Fiber ◽  
Fluorescence Sensor ◽  
Lead Ion ◽  
Fiber Grating ◽  
Ion Detection ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Highly Sensitive ◽  
Period Fiber Grating

Highly sensitive operation of intensity-based fiber-optic vibration sensor using cascaded long period fiber grating

2014 ◽  
Author(s):  
Satoshi Tanaka ◽  
Osamu Tsukida ◽  
Makoto Takeuchi ◽  
Shingo Tekuramori ◽  
Ryotaro Uchimura ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Vibration Sensor ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Highly Sensitive ◽  
Period Fiber Grating

scholarly journals Micro-force measurement with pre-curvature long-period fiber grating-based sensor

2020 ◽  
Vol 238 ◽  
pp. 12009
Author(s):  
Walter S. J. Ferreira ◽  
Paulo S. S. dos Santos ◽  
Paulo Caldas ◽  
Pedro A. S. Jorge ◽  
João M. S. Sakamoto
Keyword(s):  
Optical Fiber ◽  
Spectral Resolution ◽  
Force Measurement ◽  
Force Sensor ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Force Sensitivity ◽  
Period Fiber Grating ◽  
Micro Force Sensor

In this work, a long-period fiber grating (LPG) based sensor was evaluated as a sensing device for micro-force measurement, in the order of micro Newtons. It was used an LPG fabricated by arc-inducted technique in a SMF-28 standard optical fiber. The optical fiber was fixed between two clamps with a separation of 150 mm with the middle of the LPG located at the center. Characterizations were performed in terms of temperature, curvature and strain. The grating was then used as a micro-force sensor by means of both curvature and strain, induced by a hung mass in a stretched fiber. Furthermore, the evaluation of a precurvature LPG was performed to assess if an increase of sensitivity is achieved. Micro-force sensitivity achieved with the stretched LPG was 1.41 nm/mN and it was demonstrated that its sensitivity can be enhanced to 5.14 nm/mN with a pre-curvature of 2.2 m–1 applied to the LPG, achieving a spectral resolution of at least 15.6 μN.

Low-cost optical fiber temperature-sensing system employing optical transceivers for Ethernet and long-period fiber grating

2019 ◽  
Vol 58 (9) ◽  
pp. 2366 ◽  
Author(s):  
Osanori Koyama ◽  
Makoto Matsui ◽  
Takuro Kagawa ◽  
Yuta Suzuki ◽  
Kanami Ikeda ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Low Cost ◽  
Temperature Sensing ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Sensing System ◽  
Period Fiber Grating ◽  
Optical Transceivers
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