Characterization of phase-shifted Brillouin dynamic gratings in a polarization maintaining fiber

2016 ◽  
Author(s):  
Dengwang Zhou ◽  
Yongkang Dong ◽  
Pengbai Xu ◽  
Lei Teng ◽  
Hongying Zhang ◽  
...  
Keyword(s):  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

scholarly journals Characterization of the Brillouin grating spectra in a polarization-maintaining fiber

2010 ◽  
Vol 18 (18) ◽  
pp. 18960 ◽  
Author(s):  
Yongkang Dong ◽  
Liang Chen ◽  
Xiaoyi Bao
Keyword(s):  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

scholarly journals Imaging Depth-Resolved Tissue Birefringence With a Single Detector

2008 ◽  
Vol 2 (2) ◽  
Author(s):  
Muhammad K. Al-Kaisi ◽  
Taner Akkin
Keyword(s):  
Interference Signal ◽  
Optical Delay Line ◽  
Superluminescent Diode ◽  
Optical Delay ◽  
Single Detector ◽  
Polarization Maintaining Fiber ◽  
Band Pass ◽  
Polarization Maintaining ◽  
Orthogonal Channels

We report a novel frequency multiplexed optical coherence tomography (FM-OCT) system that is capable of measuring depth-resolved tissue birefringence from a single record of a single detector. The FM-OCT system utilizes polarization-maintaining-fiber based components. The orthogonal channels of the polarization-maintaining-fiber and the cross-terms are frequency multiplexed. After recording the interference signal, a set of digital band-pass filters extract the polarization information. A rapid scanning optical delay line in the reference arm compensates for dispersion and allows a real-time display of tissue birefringence. The axial resolution provided by a superluminescent diode working at 855nm with 28nm bandwidth is 12μm. The accuracy and sensitivity measurements suggest that the FM-OCT system is suitable for depth-resolved birefringence characterization of biological tissue.

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.

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