scholarly journals Wavelength-tunable L-band Mode-Locked Fiber Laser Using a Long-Period Fiber Grating

2021 ◽  
Author(s):  
junjie jiang ◽  
Qianqian Huang ◽  
yuehui ma ◽  
Dandan Liao ◽  
Zinan Huang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Wavelength Tunable ◽  
L Band ◽  
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.

Optimizing output spectral linewidth of fiber laser utilizing phase-shifted long-period fiber grating

2021 ◽  
Vol 142 ◽  
pp. 107221
Author(s):  
Kerong Jiao ◽  
Hua Shen ◽  
Feiyan Yang ◽  
Xuecheng Wu ◽  
Yinxu Bian ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Spectral Linewidth ◽  
Period Fiber Grating

scholarly journals Switchable Ytterbium Fiber Laser Based on a Symmetrical Long-Period Fiber Grating

2021 ◽  
pp. 1-1
Author(s):  
Juan Manuel Sierra-Hernandez ◽  
Javier Antonio Antonio Martin Vela ◽  
Guillermo Salceda Delgado ◽  
Alejandro Martinez-Rios ◽  
Teresa Elena Porraz-Culebro ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating
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