Numerical modeling and simulations on splitting of chirped optical pulses in heavily doped thulium fiber amplifiers through modal instability analysis

2019 ◽  
Author(s):  
Mohd Mansoor Khan ◽  
Ramesh K. Sonkar
Keyword(s):  
Numerical Modeling ◽  
Fiber Amplifiers ◽  
Modeling And Simulations ◽  
Optical Pulses ◽  
Instability Analysis ◽  
Heavily Doped

Numerical modeling of self-focusing beams in fiber amplifiers

2007 ◽  
Author(s):  
Roger L. Farrow ◽  
G. Ronald Hadley ◽  
Arlee V. Smith ◽  
Dahv A. V. Kliner
Keyword(s):  
Numerical Modeling ◽  
Fiber Amplifiers ◽  
Self Focusing

scholarly journals An Analysis, Numerical Modeling and Experimental Verification of Low-Temperature Thermofoil Heaters

Eng ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 249-264
Author(s):  
Borislav Dimitrov
Keyword(s):  
Numerical Modeling ◽  
Low Temperature ◽  
Experimental Verification ◽  
Thermal Field ◽  
Simulation Experiment ◽  
3D Models ◽  
Modeling And Simulations ◽  
Multiphysics Simulations ◽  
Satisfactory Precision ◽  
Geometry Analysis

In this paper, an analysis of the geometry, numerical modeling, and experimental verification of thermofoil heaters for low-temperature applications is presented. The research suggests a calculation procedure of the thermofoil traces’ geometry, comprising the necessary electrical and thermal parameters in order for the characteristics of the heater to be fully defined according to the stipulated conditions required. The derived heaters’ geometry analysis procedure is depicted with two case studies, giving the sequence of the necessary calculations and their applications as part of a design task. Its continuation, the design approach, is developed with numerical modeling, based on Finite Element Methods (FEM) used for multiphysics simulations, including the thermal and electrical heaters parameters. The realized 3D models are used to depict the uniformity of the thermal field in the system heatsink-thermofoil heater. The results from analysis, modeling, and simulations are tested experimentally. The suggested geometry analysis and modeling approach are experimentally verified. The final results demonstrate satisfactory precision with a simulation–experiment mismatch in a range of 5–7%. As a vital product of experimental research, the maximum power density for the studied thermofoil heaters is derived for a range of temperatures and material characteristics.

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