Modulational-instability-induced supercontinuum generation with saturable nonlinear response

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.013825· OSTI ID:21443019

Raja, R Vasantha Jayakantha; Porsezian, K; Nithyanandan, K ^[1]

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1. Department of Physics, Pondicherry University, Pondicherry-605 014 (India)

We theoretically investigate the supercontinuum generation (SCG) on the basis of modulational instability (MI) in liquid-core photonic crystal fibers (LCPCF) with CS{sub 2}-filled central core. The effect of saturable nonlinearity of LCPCF on SCG in the femtosecond regime is studied using an appropriately modified nonlinear Schroedinger equation. We also compare the MI induced spectral broadening with SCG obtained by soliton fission. To analyze the quality of the pulse broadening, we study the coherence of the SC pulse numerically. It is evident from the numerical simulation that the response of the saturable nonlinearity suppresses the broadening of the pulse. We also observe that the MI induced SCG in the presence of saturable nonlinearity degrades the coherence of the SCG pulse when compared to unsaturated medium.

• OSTI ID: 21443019
• Journal Information: Physical Review. A, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevA.82.013825; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CRYSTALS
ELECTRONIC STRUCTURE
FIBERS
INSTABILITY
LINE BROADENING
LIQUIDS
NONLINEAR PROBLEMS
PULSES
SCHROEDINGER EQUATION
SOLITONS
DIFFERENTIAL EQUATIONS
EQUATIONS
EVALUATION
FLUIDS
PARTIAL DIFFERENTIAL EQUATIONS
QUASI PARTICLES
SIMULATION
WAVE EQUATIONS