scholarly journals Dual-parameters demodulated torsion sensor based on Lyot filter with twisted polarization-maintaining fiber

2022 ◽  
Author(s):  
yichao zheng ◽  
Jinjian Li ◽  
Yi Liu ◽  
Yan Li ◽  
ShiLiang Qu
Keyword(s):  
Lyot Filter ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

scholarly journals Group-Birefringence-Dispersion Measurements for Polarization-Maintaining Fibers Using a Kerr Phase-Interrogator

2020 ◽  
Vol 10 (24) ◽  
pp. 9031
Author(s):  
Yang Lu
Keyword(s):  
Group Delay ◽  
Laser Wavelength ◽  
Differential Group Delay ◽  
Optical Signals ◽  
Differential Group ◽  
Principal Axes ◽  
Polarization Maintaining Fiber ◽  
Elliptical Core ◽  
Polarization Maintaining ◽  
The Impact

A method which utilizes a Kerr phase-interrogator to measure the group birefringence dispersion (GBD) of a polarization-maintaining fiber (PMF) is systematically studied in this paper. The differential group delay of two sinusoidally modulated optical signals (SMOSs) polarized along the principal axes of the PMF is measured by a Kerr phase-interrogator, which leads to the group birefringence of the PMF. As the laser wavelength of the SMOSs varies, the group birefringence as a function of the laser wavelength is obtained, and the GBD is calculated as the derivative of the group birefringence with respect to the laser wavelength. The proposed method is experimentally demonstrated by characterizations of a Panda PMF with high GBD and an elliptical core PMF with low GBD, and its performance is analyzed. The proposed method eliminates the impact of the laser coherent length and allows for characterizing the GBD of PMFs that are tens of kilometers long.

Mode-locked fiber laser generating cylindrical vector beams based on an all-polarization-maintaining fiber structure

2022 ◽  
Vol 146 ◽  
pp. 107592
Author(s):  
Chuansheng Dai ◽  
Zhipeng Dong ◽  
Yimin Zhang ◽  
Jiaqiang Lin ◽  
Peijun Yao ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Structure ◽  
Vector Beams ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining
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