Micro-bending sensing based on single-mode fiber spliced multimode fiber Bragg grating structure

2021 ◽  
pp. 127513
Author(s):  
Xiaoyan Sun ◽  
Limu Zhang ◽  
Li Zeng ◽  
Youwang Hu ◽  
Ji-an Duan
Keyword(s):  
Fiber Bragg Grating ◽  
Single Mode ◽  
Single Mode Fiber ◽  
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.

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

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

Lasing characteristics of 10 GHz signal spacing in a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating

2016 ◽  
Vol 25 (04) ◽  
pp. 1650049 ◽  
Author(s):  
A. Zakiah Malek ◽  
N. A. M. Ahmad Hambali ◽  
M. H. A. Wahid ◽  
M. M. Shahimin
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Brillouin Scattering ◽  
Ring Cavity ◽  
Single Mode ◽  
Gain Medium ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Output Coupling ◽  
Multi Wavelength

This paper experimentally demonstrated a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating (FBG) that operated in the C-band region. The FBG plays a significant role to reflect signals and filter selected wavelengths. A number of generated Brillouin Stokes (BS) signals and tuning range ability were investigated. A 9[Formula: see text]km length of single mode fiber was utilized to provide a Brillouin gain medium for generating stimulated Brillouin scattering effect. In this work, at optimum output coupling ratio of 90% and Brillouin pump (BP) wavelength of 1550[Formula: see text]nm, up to a maximum of 26 BS signals were recorded by injecting 63.1[Formula: see text]mW of amplified BP powers. The BS signals were also tunable within the ranges of 1544–1556[Formula: see text]nm in accordance with the FBG properties at 3[Formula: see text]dBm bandwidth of 5[Formula: see text]nm.

Numerical Analysis of the Hybrid Photonic Crystal Fiber and Single Mode Fiber/Fiber Bragg Grating Sensor for Simultaneous Measurement of Temperature and Strain

2019 ◽  
Vol 16 (2) ◽  
pp. 329-334 ◽  
Author(s):  
Fabio Barros de Sousa ◽  
Fiterlinge Martins de Sousa ◽  
Jorge Everaldo de Oliveira ◽  
Lelis Araujo de Oliveira ◽  
Fabricio Pinho da Luz ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Fiber Bragg Grating ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Bragg Wavelength ◽  
Crystal Fiber ◽  
Power Peak ◽  
Bragg Grating Sensor

In this paper we investigate the performance of a Fiber Bragg Grating (FBG) as a strain-optic and temperature sensor, using the Coupled Mode Theory (CMT) and the Transfer Matrix Method (TMM), through numerical simulation in an interrogation system with Single-Mode Fiber (SMF) and Photonic Crystal Fiber (PCF). Parameters such as sensitivity, bandwidth, peak power, peak wavelength and side-lobes power, were analyzed through the Bragg wavelength change depending on the simultaneous variation of strain and temperature. The FBG sensor proposed suffered thermal variation 25 °C to 200 °C and of strain of 0 μs to 1000 μs, excellent linearity was obtained for the variation of the Bragg wavelength with differences of 0.7 nm for each 50 °C and 0.245 nm for each 200.

scholarly journals Fiber refractometer based on a fiber Bragg grating and single-mode–multimode–single-mode fiber structure

2011 ◽  
Vol 36 (12) ◽  
pp. 2197 ◽  
Author(s):  
Qiang Wu ◽  
Yuliya Semenova ◽  
Binbin Yan ◽  
Youqiao Ma ◽  
Pengfei Wang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Fiber Structure
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