scholarly journals Suppression of Frequency Modulation to Amplitude Modulation Conversion with Modified Group Velocity Dispersion Compensation Device in the Front End of High-Power Lasers

2022 ◽  
Vol 12 (2) ◽  
pp. 884
Author(s):  
Xinlei Qian ◽  
Xiaochao Wang ◽  
Xinghua Lu ◽  
Tianyu Zhang ◽  
Wei Fan
Keyword(s):  
Group Velocity ◽  
High Power ◽  
Amplitude Modulation ◽  
Frequency Modulation ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Experimental Results ◽  
High Power Lasers ◽  
Front End ◽  
Compensation Device

The group velocity dispersion (GVD) occurring in the front end of high-power lasers is one of the primary factors leading to the conversion of frequency modulation (FM) to amplitude modulation (AM). In this paper, we propose a modified, active, closed-loop feedback compensation device for GVD-induced FM–AM conversion, using a two-dimensional, electric, adjustable mirror mount and parallel grating pair to improve the long-term stability, efficiency of adjustment, and accuracy of compensation. Experimental results of a 12 h FM–AM depth test revealed that the depth varied between 2.28% and 5.22%. Moreover, we formulated a mathematical relationship between the dispersion parameters and temperature in optical fibers to analyze the intrinsic effect of temperature on FM–AM. The related simulation and experimental results consistently validated the quantitative relationship between the temperature and FM–AM depth.

scholarly journals Generation and dynamics of solitonic pulses due to pump amplitude modulation at normal group-velocity dispersion

2019 ◽  
Vol 100 (1) ◽  
Author(s):  
Valery E. Lobanov ◽  
Nikita M. Kondratiev ◽  
Artem E. Shitikov ◽  
Ramzil R. Galiev ◽  
Igor A. Bilenko
Keyword(s):  
Group Velocity ◽  
Amplitude Modulation ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Normal Group

Amplification of solitary optical waves in fibers with positive group velocity dispersion

Open Physics ◽  
2007 ◽  
Vol 5 (1) ◽  
Author(s):  
Todor Arabadzhiev ◽  
Ivan Uzunov
Keyword(s):  
Frequency Shift ◽  
Group Velocity ◽  
Frequency Modulation ◽  
Pulse Energy ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Gain Saturation ◽  
Positive Group ◽  
Optical Waves

AbstractSolitary optical waves with characteristic red frequency shift have been numerically identified in fibers with positive group velocity dispersion in the presence of amplification by semiconductor amplifiers. Influence of the Henry factor, the net gain, gain saturation characteristics, and frequency modulation on the frequency shift of the observed solitary optical waves has been examined. Normalized pulse energy as a function of the gain saturation characteristics has been studied.

Group velocity dispersion measurements of 3 OAM states in 1 kilometer ring-core fiber link

2016 ◽  
Author(s):  
Haozhe Yan ◽  
Shangyuan Li ◽  
Boyu Chen ◽  
Luxin Yang ◽  
Xiaoping Zheng ◽  
...  
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Fiber Link ◽  
Core Fiber ◽  
Ring Core

scholarly journals Mode and group velocity dispersion evolution in the tapered region of a single-mode tapered fiber

2004 ◽  
Vol 12 (24) ◽  
pp. 5840 ◽  
Author(s):  
Rui Zhang ◽  
Xinping Zhang ◽  
Dominic Meiser ◽  
Harald Giessen
Keyword(s):  
Group Velocity ◽  
Velocity Dispersion ◽  
Group Velocity Dispersion ◽  
Single Mode ◽  
Tapered Fiber ◽  
Tapered Region
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