VCSEL with multi-transverse cavities with bandwidth beyond 100 GHz

E Heidari, M Ahmed, H Dalir, A Bakry, A Alshahrie… - …, 2021 - degruyter.com
To fulfill the demands of high-speed photonic applications, researchers, and engineers have
been working to improve the modulation bandwidth (MBW) of semiconductor lasers. We …

Impact of α-factor, combined optical phase and gain saturation on the onset of chaos of short external cavity semiconductor lasers

S Abdulrhmann, J Hakami, AM Alhasan, AS Altowyan… - Optik, 2023 - Elsevier
Influences of line-width enhancement factor (α-Factor), combined optical phase (COP), and
gain saturation (GS) on the onset of chaos (route to chaos (RTC)) of the short external cavity …

Chaos and noise control by current modulation in semiconductor lasers subject to optical feedback

M Ahmed, NZ El-Sayed, H Ibrahim - The European Physical Journal D, 2012 - Springer
This paper introduces comprehensive large-signal analyses of modulation dynamics and
noise of a chaotic semiconductor laser. The chaos is induced by operating the laser under …

Chaos generation by a hybrid integrated chaotic semiconductor laser

MJ Zhang, YN Niu, T Zhao, JZ Zhang, Y Liu… - Chinese …, 2018 - iopscience.iop.org
We design a hybrid integrated chaotic semiconductor laser with short-cavity optical
feedback. It can be assembled in a commercial butterfly shell with just three micro-lenses …

Numerical analysis on the impact of optical feedback and nonlinear gain on the dynamics and intensity noise of semiconductor laser

S Abdulrhmann, AH Msmali - Applied Physics B, 2022 - Springer
We demonstrate numerical analysis of the dynamics and noise of semiconductor laser (SL)
with optical feedback (OFB) and nonlinear gain (NLG). The simulations are based on an …

Modelling of semiconductor laser with double external cavities for use in ultrahigh speed photonics

M Ahmed, A Bakry - Pramana, 2021 - Springer
We model and investigate the dynamics and modulation performance of semiconductor
laser integrated with two short external cavities facing the front and back facets with the aim …

Inducing tunable single-mode operation of Fabry-Perot semiconductor laser coupled with very-short cavity with selective optical feedback

MS Al-Ghamdi, A Bakry, M Ahmed - … of the European Optical Society-Rapid …, 2019 - Springer
We report on achieving tuned single mode operation of a multimode semiconductor laser by
coupling it to a very-short external cavity with selective feedback. We show that the induced …

Intensity noise in ultra-high frequency modulated semiconductor laser with strong feedback and its influence on noise figure of RoF links

M Ahmed, A Bakry, R Altuwirqi… - Journal of the …, 2013 - jeos.edpsciences.org
We characterize the intensity noise associated with the ultra-high frequency direct
modulation of semiconductor lasers under strong optical feedback over a millimeter-wave …

Photonic Integrated Chaotic Lasers

M Zhang, J Zhang, L Qiao, T Wang - Novel Optical Fiber Sensing …, 2024 - Springer
At present, chaotic laser generation systems are mostly built by semiconductor lasers
combined with a variety of external discrete optical elements. The system has some …

Theoretical modeling of the dynamics of a semiconductor laser subject to double-reflector optical feedback

A Bakry, S Abdulrhmann, M Ahmed - Journal of Experimental and …, 2016 - Springer
We theoretically model the dynamics of semiconductor lasers subject to the double-reflector
feedback. The proposed model is a new modification of the time-delay rate equations of …