Supercontinuum generation in highly nonlinear photonic crystal fiber

Abstract

Abstract:

The nonlinear generalized Schrödinger equation has been applied to describe supercontinuum generation, whose evolution is simulated by numerical methods in the normal-dispersion regime of high nonlinear photonic crystal fibers (HN-PCFs). The effect of the pulse parameters such as the peak power of pump pulse, pulse width and the frequency chirp on the characteristics of the supercontinuum spectrum has been researched and analyzed. The numerical simulations show that with the increase of the peak power, the spectral width becomes wider and the flatness of supercontinuum becomes better. With the increase of the pulse width gradually, the spectral width becomes narrower and the flatness of supercontinuum becomes worser. It is investigated that a broadband and flat supercontinuum was generated when the proper positive and negative chirp pulse transmitting along high nonlinear photonic crystal fiber.

Key words: nonlinear optics, high nonlinear photonic crystal fiber, numerical simulation, supercontinuum spectrum, linear chirp

CLC Number:

TN 929.11

Jiang Guangyu, Xiong Wenlin, Fu Yanjun, Zhu Quanshui. Supercontinuum generation in highly nonlinear photonic crystal fiber[J]. J4, 2012, 29(1): 89-95.

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