A novel tunable fiber-optic microwave notch filter using fiber loop and cascaded fiber Bragg gratings

2004 ◽  
Vol 41 (5) ◽  
pp. 386-388 ◽  
Author(s):  
Hao Chi ◽  
Xianmin Zhang
Keyword(s):  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Notch Filter ◽  
Bragg Gratings ◽  
Fiber Loop

scholarly journals CRYOGENIC FIBER OPTIC SENSORS BASED ON FIBER BRAGG GRATINGS

2008 ◽  
Author(s):  
P. R. Swinehart ◽  
M. Maklad ◽  
S. S. Courts ◽  
J. G. Weisend ◽  
John Barclay ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Optic Sensors

scholarly journals Fiber Bragg grating fabrication by femtosecond laser radiation

2019 ◽  
Vol 220 ◽  
pp. 03007
Author(s):  
Anton Chernikov ◽  
Dmitriy Kochuev ◽  
Kirill Khorkov ◽  
Ruslan Chkalov ◽  
Nikolay Davydov
Keyword(s):  
Laser Radiation ◽  
Femtosecond Laser ◽  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Optic Sensors ◽  
Bragg Grating ◽  
Femtosecond Laser Radiation ◽  
Grating Fabrication

The paper presents the results of fiber Bragg gratings fabrication by femtosecond laser radiation using point-by-point and line-by-line inscription methods. The approach makes it possible to fabricate the second and higher diffraction orders fiber Bragg gratings, which can be used as sensitive elements of fiber-optic sensors.

MEASUREMENT OF STRAINS IN CARBON-REINFORCED POLYMER COMPOSITE PRODUCTS AT ELEVATED TEMPERATURES USING FIBER-OPTIC SENSORS

2019 ◽  
pp. 14-19
Author(s):  
O. N. Budadin ◽  
W. Yu. Kutyurin ◽  
A. N. Rykov ◽  
P. I. Gnusin
Keyword(s):  
Elevated Temperatures ◽  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Optic Sensors ◽  
Effect Of Temperature ◽  
Main Task ◽  
Reinforced Polymer ◽  
Different Temperatures ◽  
Quantitative Results

The main task of the contribution was the estimation of the possibility of using Fiber Bragg Gratings as a mean of measuring the deformation in standard carbon fiber samples at elevated temperatures. The article presents the results of experiments on the measurement of deformations in a carbon sample using Fiber Bragg Gratings on an optical fiber. Deformations were measured in the process of stretching the sample at different temperatures (range from 20 to 140 °C). It is shown that FBGs integrated into the sample material give more stable, reproducible readings, unlike to inlay on the outer surface. It has been established that the use of several FBGs with different sensitivity to temperature or deformation (created by mechanically decoupling the sensor from the sample) makes it possible to compensate the effect of temperature when measuring deformations. The quantitative results of measurements are provided.

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