Strain Sensor Based on a Long Period Fiber Grating with Dual-Resonance Closed in the Interferometric Structure

2018 ◽  
Author(s):  
Renata Zawisza ◽  
Predrag Mikulic ◽  
Wojtek J. Bock ◽  
Leszek R. Jaroszewicz
Keyword(s):  
Strain Sensor ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Dual Resonance ◽  
Period Fiber Grating

A new strain sensor based on depth-modulated long-period fiber grating

2020 ◽  
Vol 111 ◽  
pp. 103520
Author(s):  
Yang Yi ◽  
Yiwei Ma ◽  
Senyu Wang ◽  
Xiaoyang Li ◽  
Hongjia Zhu ◽  
...  
Keyword(s):  
Strain Sensor ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

scholarly journals Wavelength-Tunable, Ultra-Broadband, Biconical, Long-Period Fiber Grating Mode Converter Based on the Dual-Resonance Effect

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5970
Author(s):  
Yu Zheng ◽  
Huiyi Guo ◽  
Mao Feng ◽  
Zhi Wang ◽  
Yange Liu
Keyword(s):  
Mode Conversion ◽  
Resonance Effect ◽  
Mode Converter ◽  
Ultra Wideband ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Wavelength Tunable ◽  
Dual Resonance ◽  
Period Fiber Grating

We demonstrated a wavelength-tunable, ultra-wideband, biconical, long-period fiber grating (BLPFG) mode converter in a two-mode fiber based on fusion taper technology and CO2 laser writing technology. Theoretical and experimental results show that after changing the diameter of the two-mode fiber by fusing and tapering, the dispersion turning point of the fiber is adjusted and wavelength-tunable broadband mode conversion is achieved efficiently. Theoretical simulation shows that the mode conversion bandwidth can cover the O + E + S + C band. In the experiment, we fabricated adiabatic tapers with cladding diameters of 113 μm and 121 μm and wrote gratings on these tapers to achieve dual-resonance coupling, thus realizing mode conversion from LP01 to LP11, with a 15 dB bandwidth of 148.8 nm from 1229.0 nm to 1377.8 nm and of 168.5 nm from 1319.7 nm to 1488.2 nm, respectively. As far as we know, this is the first time that fusion taper technology has been used to adjust the window of the dual-resonant coupling of an optical fiber. This work broadens the scope of application of the dual-resonance effect and proposes a general method for widening the bandwidth of a fiber grating with tunable wavelength.

All-fiber strain sensor based on dual side V-grooved long-period fiber grating

2021 ◽  
pp. 1-1
Author(s):  
Yiwei Ma ◽  
Min Zhao ◽  
Jing Sun ◽  
Chunbo Su ◽  
Xiaoyang Li ◽  
...  
Keyword(s):  
Strain Sensor ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

High-Sensitivity Strain Sensor of Long Period Fiber Grating Based on Grooved Technology

2016 ◽  
Vol 53 (10) ◽  
pp. 100602
Author(s):  
刘宇 Liu Yu ◽  
李云梅 Li Yunmei ◽  
路永乐 Lu Yongle ◽  
周帆 Zhou Fan ◽  
钟懿 Zhong Yi
Keyword(s):  
Strain Sensor ◽  
High Sensitivity ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating
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