Next Article in Journal
Effects of Photonic Band Structure and Unit Super-Cell Size in Graded Photonic Super-Crystal on Broadband Light Absorption in Silicon
Next Article in Special Issue
Nonlinear Dynamics of Exclusive Excited-State Emission Quantum Dot Lasers Under Optical Injection
Previous Article in Journal
Multifunctional Smart Optical Fibers: Materials, Fabrication, and Sensing Applications
Previous Article in Special Issue
Exploiting the Nonlinear Dynamics of Optically Injected Semiconductor Lasers for Optical Sensing
Open AccessArticle

Investigation of the Effect of Intra-Cavity Propagation Delay in Secure Optical Communication Using Chaotic Semiconductor Lasers

1
School of Physics, Southwest University, Chongqing 400715, China
2
Department of Physics, Pondicherry University, Pondicherry 605014, India
3
School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China
*
Authors to whom correspondence should be addressed.
Photonics 2019, 6(2), 49; https://doi.org/10.3390/photonics6020049
Received: 19 March 2019 / Revised: 25 April 2019 / Accepted: 8 May 2019 / Published: 9 May 2019
(This article belongs to the Special Issue Semiconductor Laser Dynamics: Fundamentals and Applications)
The influence of intra-cavity propagation delay in message encoding and decoding using chaotic semiconductor lasers is numerically investigated. A message is encoded at the transmitter laser by a chaos shift keying scheme and is decoded at the receiver by comparing its output with the transmitter laser. The requisite intra-cavity propagation delay in achieving synchronization of optical chaos is estimated by cross-correlation analysis between the transmitter and receiver lasers’ output. The effect of intra-cavity propagation delay on the message recovery has been analyzed from the bit error rate performance. It is found that despite the intra-cavity propagation delay magnitude being less, it has an impact on the quality of message recovery. We also examine the dependency of injection rate, frequency detuning, modulation depth and bit rate on intra-cavity propagation delay and associated message recovery quality. We found that the communication performance has been adequately improved after incorporating intra-cavity propagation delay correction in the synchronization system. View Full-Text
Keywords: chaos synchronization; intra-cavity propagation delay; secure optical communication; semiconductor lasers chaos synchronization; intra-cavity propagation delay; secure optical communication; semiconductor lasers
Show Figures

Figure 1

MDPI and ACS Style

Jayaprasath, E.; Wu, Z.-M.; Sivaprakasam, S.; Hou, Y.-S.; Tang, X.; Lin, X.-D.; Deng, T.; Xia, G.-Q. Investigation of the Effect of Intra-Cavity Propagation Delay in Secure Optical Communication Using Chaotic Semiconductor Lasers. Photonics 2019, 6, 49.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop