Power-compensated displacement sensing based on single mode-multimode fiber Bragg grating structure

2013 ◽  
Vol 311 ◽  
pp. 140-143 ◽  
Author(s):  
An Sun ◽  
Zhishen Wu ◽  
Huang Huang
Keyword(s):  
Fiber Bragg Grating ◽  
Single Mode ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Grating Structure

Simultaneous Measurement of Temperature and Refractive Index Using a Fiber Bragg Grating and a Multimode Fiber

2011 ◽  
Vol 130-134 ◽  
pp. 4053-4056
Author(s):  
Zheng Rong Tong ◽  
Yang Guo ◽  
Xiu Feng Yang ◽  
Ye Cao
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Simultaneous Measurement ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Compact Size ◽  
Good Operation

We introduce an all-fiber sensor capable of simultaneous measurement of temperature and refractive index (RI). The sensor system consists of a single mode fiber Bragg grating (FBG) and a single-mode-multimode-single-mode (SMS) structure which serves as a Mach-Zehnder interferometer (MZI), and the multimode fiber (MMF) is etched by hydrofluoric acid solution. The experimental results demonstrate that the temperature sensitivities of FBG and MZI are 0.016nm/°C and 0.093nm/°C, respectively, and the RI sensitivity of MZI achieves 226.25nm/RIU. The interesting properties of the sensor include compact size, high sensitivity and good operation linearity.

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.

Monitoring of single-mode fiber laser heating using Rayleigh scattering and first order fs-PbP fiber Bragg grating

2017 ◽  
Author(s):  
Rudy Desmarchelier ◽  
Romain Cotillard ◽  
Nicolas Roussel ◽  
Steven Armiroli ◽  
Guillaume Laffont
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Laser Heating ◽  
Rayleigh Scattering ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
First Order

Multimode Fiber Bragg Grating Wavelength Filter in a 10-Gb/s System

2008 ◽  
Vol 20 (8) ◽  
pp. 584-586 ◽  
Author(s):  
Scott S.-H. Yam ◽  
Xijia Gu ◽  
Waleed Mohammed ◽  
Peter W. Smith
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Wavelength Filter

Raman suppression in a high-power single-mode fiber oscillator using a chirped and tilted fiber Bragg grating

2021 ◽  
Vol 18 (3) ◽  
pp. 035103
Author(s):  
Xiaofan Zhao ◽  
Xin Tian ◽  
Qihao Hu ◽  
Binyu Rao ◽  
Meng Wang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Power ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating

Adaptive Peak-Tracking Algorithm for Multimode Fiber Bragg Grating in Ultrahigh Temperature

2021 ◽  
Author(s):  
I. Laarossi ◽  
P. Roldán-Varona ◽  
M.A. Quintela-Incera ◽  
L. Rodŕıguez-Cobo ◽  
J. M. López-Higuera
Keyword(s):  
Fiber Bragg Grating ◽  
Tracking Algorithm ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Peak Tracking ◽  
Adaptive Peak ◽  
Ultrahigh Temperature
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