scholarly journals Differential group delay monitoring for high-speed data based on a low-frequency radio-frequency tone power measurement

2012 ◽  
Vol 6 (2) ◽  
pp. 102
Author(s):  
R. Vilar ◽  
N. Nadarajah ◽  
A. Nirmalathas ◽  
R. Llorente ◽  
F. Ramos
Keyword(s):  
Radio Frequency ◽  
High Speed ◽  
Group Delay ◽  
Low Frequency ◽  
Power Measurement ◽  
Differential Group Delay ◽  
Frequency Tone ◽  
Differential Group ◽  
High Speed Data

Linear photonic radio frequency phase shifter using a differential-group-delay element and an optical phase modulator

2010 ◽  
Vol 35 (11) ◽  
pp. 1881 ◽  
Author(s):  
Zhaohui Li ◽  
Changyuan Yu ◽  
Yi Dong ◽  
Linghao Cheng ◽  
L. F. K. Lui ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Phase Shifter ◽  
Group Delay ◽  
Phase Modulator ◽  
Delay Element ◽  
Differential Group Delay ◽  
Optical Phase ◽  
Differential Group ◽  
Frequency Phase

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.

scholarly journals Spectral characterization of differential group delay in uniform fiber Bragg gratings

2005 ◽  
Vol 13 (25) ◽  
pp. 9954 ◽  
Author(s):  
S. Bette ◽  
C. Caucheteur ◽  
M. Wuilpart ◽  
P. Mégret ◽  
R. Garcia-Olcina ◽  
...  
Keyword(s):  
Group Delay ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Spectral Characterization ◽  
Differential Group Delay ◽  
Differential Group
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