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

Article

Barua, Suchi, Das, Narottam, 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. https://doi.org/10.1016/j.optcom.2015.09.038
Article Title

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

ERA Journal ID1276
Article CategoryArticle
AuthorsBarua, Suchi (Author), Das, Narottam (Author), Nordholm, Sven (Author) and Razaghi, Mohammad (Author)
Journal TitleOptics Communications
Journal Citation359, pp. 73-78
Number of Pages6
Year2016
Place of PublicationNetherlands
ISSN0030-4018
1873-0310
Digital Object Identifier (DOI)https://doi.org/10.1016/j.optcom.2015.09.038
Web Address (URL)http://www.sciencedirect.com/science/article/pii/S0030401815301188
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.

Keywordsfinite-difference beam propagation method; input pulse shapes; optical pulse propagation; gain saturation; semiconductor optical amplifiers
ANZSRC Field of Research 2020400899. Electrical engineering not elsewhere classified
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Byline AffiliationsCurtin University
School of Mechanical and Electrical Engineering
University of Kurdistan, Iran
Institution of OriginUniversity of Southern Queensland
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