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Experimental demonstration of 25 GHz wideband chaos in symmetric dual port EDFRL

Mirg, Shubham, Jain, Ankita, Pandey, Akash, Krishnamurthy, Pradeep Kumar ORCID: 0000-0003-0239-7753 and Landais, Pascal ORCID: 0000-0002-4807-0695 (2017) Experimental demonstration of 25 GHz wideband chaos in symmetric dual port EDFRL. Applied Optics, 56 (28). pp. 7939-7943. ISSN 0003-6935

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Abstract

We study dynamics of chaos in dual port erbium-doped fiber ring laser (EDFRL). The laser consists of two erbium-doped fibers, intracavity filters at 1549.30 nm, isolators, and couplers. At both ports, the laser transitions into the chaotic regime for pump currents greater than 100 mA via period doubling route. We calculate the Lyapunov exponents using Rosenstein’s algorithm. We obtain positive values for the largest Lyapunov exponent (≈0.2) for embedding dimensions 5, 7, 9 and 11 indicating chaos. We compute the power spectrum of the photocurrents at the output ports of the laser. We observe a bandwidth of ≈ 25 GHz at both ports. This ultra wideband nature of chaos obtained has potential applications in high speed random number generation and communication.

Item Type:Article (Published)
Refereed:Yes
Subjects:Engineering > Optical communication
Physical Sciences > Lasers
Physical Sciences > Optoelectronics
Physical Sciences > Photonics
Physical Sciences > Semiconductors
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Publisher:Optical Society of America
Official URL:http://dx.doi.org/10.1364/AO.56.007939
Copyright Information:© 2017 Optical Society of America
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Marie Curie International Research Staff Exchange Scheme Fellowship, 7th European Community Framework Programme, under Grant 318941
ID Code:24225
Deposited On:19 Feb 2020 16:00 by Pascal Landais . Last Modified 31 Jul 2020 13:45

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