Comparison of pulse propagation and gain saturation characteristics among different input pulse shapes in semiconductor optical amplifiers

Barua, Suchi and Das, Narottam and Nordholm, Sven and Razaghi, Mohammad (2016) Comparison of pulse propagation and gain saturation characteristics among different input pulse shapes in semiconductor optical amplifiers. Optics Communications, 359. pp. 73-78. ISSN 0030-4018

Abstract

This paper presents the pulse propagation and gain saturation characteristics for different input optical pulse shapes with different energy levels in semiconductor optical amplifiers (SOAs). A finite-difference beam propagation method(FD-BPM)is used to solve the modified non-linear Schrödinger equation(MNLSE)for the simulation of nonlinear optical pulse propagation and gain saturation characteristics in the SOAs. In this MNLSE, the gain spectrum dynamics, gain saturation are taken into account those are depend on the carrier depletion, carrier heating, spectral hole-burning, group velocity dispersion, self-phase modulation and two photon absorption. From this simulation, we obtained the output waveforms and spectra for different input pulse shapes considering different input energy levels. It has shown that the output pulse shape has changed due to the variation of input parameters, such as input pulse shape, input pulsewidth, and input pulse energy levels. It also shown clearly that the peak position of the output waveforms are shifted toward the leading edge which is due to the gain saturation of the SOA. We also compared the gain saturation characteristics in the SOA for different input pulse shapes.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 04 Jul 2016 04:51
Last Modified: 05 Jul 2016 00:03
Uncontrolled Keywords: finite-difference beam propagation method; input pulse shapes; optical pulse propagation; gain saturation; semiconductor optical amplifiers
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 89 Information and Communication Services > 8999 Other Information and Communication Services > 899999 Information and Communication Services not elsewhere classified
Identification Number or DOI: 10.1016/j.optcom.2015.09.038
URI: http://eprints.usq.edu.au/id/eprint/28440

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