120 citations · 234 across the 11 of their papers we have counts for
11 papers
PT-invariant nonlocal variable-coefficient Fokas-Lenells equation: nonstandard Hirota bilinearization, symmetry-preserving and breaking multi-soliton solutions
Sagardeep Talukdar, Ramakrishnan R, Sudipta Nandy +1
In this paper, we explore a variable-coefficient Fokas-Lenells system with gain/loss. Applying a nonlocal symmetry reduction, the system leads to a PT-invariant variable-coefficien…
Nondegenerate bright solitons and their interactions in the generalized coupled nonlinear Schroedinger system
R. Ramakrishnan, Samudra Roy, S. Stalin +1
It is known that the generalized coupled nonlinear Schroedinger (GCNLS) equations can be reduced to the basic vector nonlinear Schroedinger models through various symmetry reductio…
Integrable motion of curves associated with the Fokas-Lenells equation and related spin system
R. Ramakrishnan, Sagardeep Talukdar, M. Lakshmanan +1
In this article, we study the gauge equivalence between the integrable Fokas- Lenells equation (FLE) and an associated spin equation through a gauge transformation and the zero cur…
Bright soliton interactions in the variable coefficient Fokas-Lenells equation, Conservation laws, Modulation instability and Soliton tunneling
Sagardeep Talukdar, R. Ramakrishnan, Sudipta Nandy +1
We present here a study of the bright soliton dynamics in an inhomogeneous fibre by means of variable coefficient Fokas-Lenells equation with time varying dispersion, nonlinearity…
Coupled Nonlinear Schrödinger System: Role of Four-Wave Mixing Effect on Nondegenerate Vector Solitons
R. Ramakrishnan, M. Kirane, S. Stalin +1
In this paper, we investigate the role of four-wave mixing effect on the structure of nondegenerate vector solitons and their collision dynamics. For this purpose, we consider the…
Dynamics of nondegenerate solitons in long-wave short-wave resonance interaction system
S. Stalin, R. Ramakrishnan, M. Lakshmanan
In this paper, we study the dynamics of an interesting class of vector solitons in the long wave-short wave resonance interaction (LSRI) system. The model that we consider here des…
Nondegenerate bright solitons in coupled nonlinear Schrödinger systems: Recent developments on optical vector solitons
S. Stalin, R. Ramakrishnan, M. Lakshmanan
Nonlinear dynamics of an optical pulse or a beam continue to be one of the active areas of research in the field of optical solitons. Especially, in multi-mode fibers or fiber arra…
Multihumped nondegenerate fundamental bright solitons in -coupled nonlinear Schrödinger system
R. Ramakrishnan, S. Stalin, M. Lakshmanan
In this letter we report the existence of nondegenerate fundamental bright soliton solution for coupled multi-component nonlinear Schrödinger equations of Manakov type. To derive t…
Nondegenerate Solitons and their Collisions in Manakov System
R. Ramakrishnan, S. Stalin, M. Lakshmanan
Recently, we have shown that the Manakov equation can admit a more general class of nondegenerate vector solitons, which can undergo collision without any intensity redistribution…
Nondegenerate soliton solutions in certain coupled nonlinear Schrödinger systems
S. Stalin, R. Ramakrishnan, M. Lakshmanan
In this paper, we report a more general class of nondegenerate soliton solutions, associated with two distinct wave numbers in different modes, for a certain class of physically im…
Nondegenerate solitons in Manakov system
S. Stalin, R. Ramakrishnan, M. Senthilvelan +1
It is known that Manakov equation which describes wave propagation in two mode optical fibers, photorefractive materials, etc. can admit solitons which allow energy redistribution…