Simulation of Chirped Pulse Propagation in Silicon Nanowires: Shape and Spectrum Analysis - Optics and Photonics Journal

OPJ > Vol.6 No.8, August 2016

Optics and Photonics Journal

Volume 6, Issue 8 (August 2016)

ISSN Print: 2160-8881 ISSN Online: 2160-889X

Google-based Impact Factor: 0.76 Citations h5-index & Ranking

Simulation of Chirped Pulse Propagation in Silicon Nanowires: Shape and Spectrum Analysis ()

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DOI: 10.4236/opj.2016.68B010 1,703 Downloads 2,886 Views Citations

Author(s)

Hassan Pakarzadeh^1*, Zeinab Delirian¹, Mostafa Taghizadeh²

Affiliation(s)

¹Department of Physics, Shiraz University of Technology, Shiraz, Iran.
²Atomic and Molecular Group, Faculty of Physics, Yazd University, Yazd, Iran.

ABSTRACT

In this paper, we simulate the propagation of chirped pulses in silicon nanowires by solving the nonlinear Schrodinger equation (NLSE) using the split-step Fourier (SSF) method. The simulations are performed both for the pulse shape (time domain) and for the pulse spectrum (frequency domain), and various linear and nonlinear effects changing the shape and the spectrum of the pulse are analyzed. Owing to the high nonlinear coefficient and a very small effective-mode area, the required length for observing nonlinear effects in nanowires is much shorter than that of conventional optical fibers. The impacts of loss, nonlinear effects, second- and third-order dispersion coefficients and the chirp parameter on pulse propagation along the nanowire are investigated. The results show that the sign and the value of the chirp parameter have important role in pulse propagation so that in the anomalous dispersion regime, the compression occurs for the up- chirped pulses, whereas the broadening takes place for the down-chirped pulses. The opposite situation happens for up- and down-chirped pulses propagating in the normal dispersion regime.

KEYWORDS

Silicon Nanowire, Nonlinear Schrödinger Equation, Chirp, Pulse Propagation

Share and Cite:

Pakarzadeh, H. , Delirian, Z. and Taghizadeh, M. (2016) Simulation of Chirped Pulse Propagation in Silicon Nanowires: Shape and Spectrum Analysis. Optics and Photonics Journal, 6, 53-61. doi: 10.4236/opj.2016.68B010.

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[6]	Impact of Chirp Parameter on the Pulse Evolution in Dispersion- Engineered Silicon Nanowires
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[7]	Estudio y Simulación de la Propagación de Pulsos de Luz Generados Mediante Modulación Directa de Láseres de Semiconductor en Sistemas de Comunicaciones …
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