Supercontinuum generation in a large mode area photonic crystal fiber

Rim Cherif; Ivaylo Nikolov; Mourad Zghal; Miltcho Danailov

doi:10.1117/12.848983

11 November 2009 Supercontinuum generation in a large mode area photonic crystal fiber

Rim Cherif, Ivaylo Nikolov, Mourad Zghal, Miltcho Danailov

Proceedings Volume 7501, International Conference on Ultrafast and Nonlinear Optics 2009; 75010K (2009) https://doi.org/10.1117/12.848983
Event: Ultrafast Nonlinear Optics 2009, 2009, Bourgas, Bulgaria

Abstract

In this paper, we report about a numerical and experimental study of a high energy, micro-joule range, supercontinuum (SC) spectrum which is generated in a large mode area (LMA) photonic crystal fiber (PCF). Our experiment consists of launching a train of 100 femtosecond pulses into a 20 cm-long span of a PCF delivered from a Ti:Sapphire pump parametric amplifier. The optical properties of the PCF were accurately calculated using a finite element method mode solver and the real cross section of the fiber. The PCF exhibits a zero dispersion wavelength at 1250 nm and has an effective area of 660 μm² at λ=1250 nm. We observed an octave-spanning SC with spectral components propagating in the fundamental mode. The physical processes leading to the construction of the continuum spectrum were studied by monitoring the growth of the SC while increasing the input optical power. The main mechanisms behind the spectral broadening are mainly ruled by the effects of self-phase modulation, the stimulated Raman scattering, and the soliton propagation. Our experimental results are compared with the numerical solution of the nonlinear Schrodinger equation and good agreement between experimental and numerical results is found.

Citation Download Citation

Rim Cherif, Ivaylo Nikolov, Mourad Zghal, and Miltcho Danailov "Supercontinuum generation in a large mode area photonic crystal fiber", Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010K (11 November 2009); https://doi.org/10.1117/12.848983

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