Investigation of a flexibly tunable dispersion compensator based on uniform fiber Bragg grating without central wavelength shift and its application to tunable repetition-rate multiplication

2006 ◽  
Author(s):  
Young-Geun Han ◽  
Ju Han Lee ◽  
Sang Bae Lee
Keyword(s):  
Fiber Bragg Grating ◽  
Repetition Rate ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Central Wavelength ◽  
Dispersion Compensator

Pressure Sensing Characteristic of Fiber Bragg Grating Based on Diaphragm-Cantilever Beam

2014 ◽  
Vol 556-562 ◽  
pp. 4400-4403 ◽  
Author(s):  
Yu Fei Gao ◽  
Chao Liu ◽  
Hai Wei Mu
Keyword(s):  
Fiber Bragg Grating ◽  
Ambient Pressure ◽  
Simulation Method ◽  
Resonance Wavelength ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Fiber Grating ◽  
Pressure Sensing ◽  
Central Wavelength ◽  
Mechanics Of Materials

In this paper, a compounding pressure sensing structure of Fiber Bragg Grating (FBG) based on circular plate diaphragm and equal strength cantilever is proposed. Based on mechanics of materials principle and mode coupling theory, a linear expression between uniform pressure and central wavelength shift of fiber grating fixed on the surface of the cantilever has been achieved. The pressure shift of fundamental modes resonance wavelength is investigated by means of simulation method. The results show that the resonance wavelengths are linearity increased with ambient pressure. The conclusion is of great aid to the application of the fiber Bragg grating.

Development of Fiber Bragg Grating (FBG) as Temperature Sensor Inside Packed-bed Non-thermal Plasma Reactor

2014 ◽  
Vol 68 (3) ◽  
Author(s):  
Siti Musliha Aishah Musa ◽  
RK Raja Ibrahim ◽  
Asrul Izam Azmi
Keyword(s):  
Fiber Bragg Grating ◽  
Temperature Variation ◽  
Thermal Plasma ◽  
Temperature Sensor ◽  
Plasma Reactor ◽  
Packed Bed ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Bragg Wavelength ◽  
Non Thermal Plasma

This paper presents early work on Fiber Bragg grating (FBG) as temperature sensor to monitor temperature variation inside a packed-bed non-thermal plasma reactor. FBG made from germania-doped fiber with center Bragg wavelength of 1552.5 nm was embedded inside non-thermal plasma reactor with sphere shape dielectric bead (barium titanate) and used to probe the temperature variation inside the reactor. The experimental works have proven that FBG is a suitable sensor to monitor temperature variation inside of reactor via LabVIEW program. Besides that, Optical Spectrum Analyzer (OSA) recorded Bragg wavelength shift as voltage of power supply increases, which indicate the non-uniform temperature variation occurring inside the reactor. However, it does not affect the chemical reaction inside the reactor because the temperature condition is in steady state.

scholarly journals Femtosecond-Laser-Assisted Fabrication of Radiation-Resistant Fiber Bragg Grating Sensors

2022 ◽  
Vol 12 (2) ◽  
pp. 886
Author(s):  
Hun-Kook Choi ◽  
Young-Jun Jung ◽  
Bong-Ahn Yu ◽  
Jae-Hee Sung ◽  
Ik-Bu Sohn ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fiber Bragg Grating ◽  
Optical Fibers ◽  
Coming Out ◽  
Single Mode ◽  
Femtosecond Laser Irradiation ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Radiation Resistant ◽  
Fbg Sensors

This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers. We detected the Bragg resonance at 1542 nm. By controlling the irradiation conditions, we improved the signal strength coming out from the FBG sensors. A significant reduction in the Bragg wavelength shift was detected in the fabricated FBG sensors for a radiation dose up to 105 gray, indicating excellent radiation resistance capabilities. We also characterized the temperature sensitivity of the radiation-resistant FBG sensors and detected outstanding performance.

Sign in / Sign up

Export Citation Format

Share Document