scholarly journals Dynamics of dark breathers and Raman-Kerr frequency combs influenced by high-order dispersion

2021 ◽  
Author(s):  
Mulong Liu ◽  
Huimin Huang ◽  
zhizhou lu ◽  
Yuanyuan Wang ◽  
yanan cai ◽  
...  
Keyword(s):  
High Order ◽  
Frequency Combs ◽  
Order Dispersion

Influences of pump power and high-order dispersion on dual-pumped silicon-on-insulator micro-ring resonator-based optical frequency combs

2019 ◽  
Vol 33 (10) ◽  
pp. 1950117
Author(s):  
Jin Wen ◽  
Lina Duan ◽  
Wei Fan
Keyword(s):  
Pump Power ◽  
Power Distribution ◽  
Ring Resonator ◽  
High Order ◽  
Silicon On Insulator ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Third Order Dispersion ◽  
Order Dispersion

We numerically investigate the effects of pump power and high-order dispersion (HOD) on the generation and evolution of silicon-on-insulator (SOI) micro-ring resonator-based optical frequency combs (OFCs). The observed bandwidth and number of comb modes increase as the pump power enhances, which demonstrates the pump power as low as 0 dBm is required to initiate in the dual-pumped scheme, while the optimized pump power distribution ratio is around 0.5. The HOD can also be introduced to analyze the nonlinear symmetry breaking of the OFC, especially the sign and amplitude of the third-order dispersion determines the variation of the output OFC. Through optimizing the parameters, broadband OFC spanning nearly from 1200 nm to 2100 nm can be realized. This work could give insight for exploring detail characteristics of SOI micro-ring OFCs influenced by pump power and HOD, as well as provide a viable route to delicate control of OFC generation through dispersion adjusting.

High-order dispersion suppression for FFAG-based optics

2012 ◽  
Vol 7 (05) ◽  
pp. P05011-P05011 ◽  
Author(s):  
R Fenning ◽  
S Machida ◽  
D Kelliher ◽  
A Khan ◽  
R Edgecock
Keyword(s):  
High Order ◽  
Order Dispersion

scholarly journals Stability of Soliton Solutions For A PT- Symmetric NLDC Considering High-Order Dispersion and Nonlinear Effects Simultaneously

2021 ◽  
Author(s):  
Lida Safaei ◽  
Mohsen Hatami ◽  
Mahmood Borhani Zarandi
Keyword(s):  
Communication Systems ◽  
Exact Analytical Solution ◽  
Nonlinear Effects ◽  
High Order ◽  
Order Effects ◽  
Coupled Equations ◽  
Solitary Solutions ◽  
Stability And Instability ◽  
The Stability ◽  
Order Dispersion

Abstract In this paper, we analytically solve the coupled equations of a PT -Symmetric NLDC by considering high-order dispersion and nonlinear effects (Raman Scattering and self-steeping) simultaneously in normal dispersion regime. To the best of knowledge no works has been done in previous studies to decoupled these equations and obtain an exact analytical solution. The new exact bright solitary solutions are derived. In addition, to study the stability and instability of these propagated solitons in a PT -Symmetric NLDC, perturbation theory is used. Numerical methods are applied to find perturbed eigenvalues and eigenfunctions. The Stability of obtained four perturbed eigenvalues and perturbed eigenfunctions for a PT -Symmetric NLDC equations regard to high-order effects are examined. Using these results and simulating the propagation of perturbed temporal bright solitons through PT -Symmetric NLDC show that perturbed solitons are mostly stable. This means that high-order dispersion and nonlinear effects canceled each other and do not affected the propagated solitons. Furthermore, the evolution of perturbed solitons energies match well the previous results and con rmed the stability of these solitons in a PT -Symmetric NLDC. As seen the energies of pulses in bar and cross behave in two manner 1) the exchange of energy is happened in some periods, but the shape of each pulse in bar and cross is preserved. Therefore, the solitons under this eigenfunction perturbation are mostly stable. 2) the evolution of energy in the bar and cross, demonstrate that there is no changes in their energies and they remain constant. It is straightforward to show that in spite of considering high-order effects, the perturbed soliton conserve the shape and it remain stable. The deliverables of this article not only demonstrate a novel approach to ultra-fast pulses, solitons and optical couplers, but more fundamentally, they could give insight for improving the new medical equipments technologies, enabling innovations in nonlinear optics and their usage in designing new communication systems and Photonic devices.

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