Influence of the decoding process on the performance of chaos encrypted optical communication systems

Kanakidis, D.; Argyris, Apostolos; Bogris, Adonis; Syvridis, Dimitris

doi:10.1109/jlt.2005.859850

Cited by 48 publications

(15 citation statements)

References 24 publications

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“…The dynamics of intensity fluctuation in a single-mode semiconductor laser is modeled by the Lang-Kobayashi model, which are historical milestone papers for semiconductor lasers' chaotic dynamics [36], which include the effect of optical feedback time delay [37]. The Lang-Kobayashi equations for the complex amplitude electric field E (t) and the carrier number N (t) are written as follows [38]:…”

Section: Theory Of Semiconductor Lasers With Optical Feedbackmentioning

confidence: 99%

Coherence Resonance in Optical Feedback Chaos: Hiding Frequency in Chaos Communication

Bayati¹,

Ahmad²,

Ahmed³

2018

Chaos Theory

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In this chapter, an experimentally and numerically conducted investigation of the existence of high chaotic spiking in the dynamics of semiconductor lasers with AC-coupled optical feedback, the bifurcation diagram by feedback strength attenuation and the bias current as a control parameter was done. A semiconductor laser subjected to an external optical feedback can present a big change of dynamic behaviors, such as periodic and quasiperiodic oscillations, chaos, coherence collapse, and low-frequency fluctuations (LFF's) that degrade the laser characteristics. The chaotic instability is experimentally investigated on feedback strength as a control parameter, and the resulted dynamic is monostability. Finally, we indicated that the observed chaotic dynamic is a good candidate to hide information in order to investigate the resonance phenomena, which is important for chaos to encrypt data in optical communication, where data disappear when modulated in a chaos carrier. The aim of this chapter is to investigate the encryption area in the chaotic system when the applied frequency is 1-500 MHz, for satisfying the secure communication.

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Section: Theory Of Semiconductor Lasers With Optical Feedbackmentioning

confidence: 99%

Coherence Resonance in Optical Feedback Chaos: Hiding Frequency in Chaos Communication

Bayati¹,

Ahmad²,

Ahmed³

2018

Chaos Theory

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“…In close-loop configuration, the semiconductor lasers in transmitter and receiver are identical and both are subjected to external-cavity optical feedback. In open-loop configuration, the laser in transmitter is subjected to external-cavity feedback, while the laser in receiver is only a single diode similar to that in transmitter [6][7][8] . Meanwhile, the synchronization mechanisms in the two kinds of configuration are different.…”

mentioning

confidence: 99%

“…For the latter case, large tolerance to parameter mismatches enables the transmission to be easily realized. The time-lag is only determined by the propagation time and the output of the receiver is proportional to that of transmitter [1,[6][7][8][9][10][11][12][13][14] . The ratio of output of receiver to that of transmitter can be named as the system gain in Ref.…”

mentioning

confidence: 99%

“…The first one is to subtract the amplitude output of transmitter from that of receiver, and the difference of them is used to recover message [1] . The second one is similar to the first one, but the difference is normalized by the receiver's amplitude output [7] . The third one is to use power or optical current converted from laser's amplitude to recover message [7,9] .…”

mentioning

confidence: 99%

“…The second one is similar to the first one, but the difference is normalized by the receiver's amplitude output [7] . The third one is to use power or optical current converted from laser's amplitude to recover message [7,9] . Subtracting the output of transmitter from that of receiver is the common characteristic of all these decoding methods.…”

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confidence: 99%

See 2 more Smart Citations

Performance of a new decoding method used in open-loop all-optical chaotic communication system

Liu

Feng

2011

J. Electron.(China)

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A new decoding method with decoder is used in open-loop all-optical chaotic communication system under strong injection condition. The performance of the new decoding method is numerically investigated by comparing it with the common decoding method without decoder. For new decoding method, two cases are analyzed, including whether or not the output of the decoder is adjusted by its input to receiver. The results indicate the decoding quality can be improved by adjusting for the new decoding method. Meanwhile, the injection strength of decoder can be restricted in a certain range. The adjusted new decoding method with decoder can achieve better decoding quality than decoding method without decoder when the bit rate of message is under 5 Gb/s. However, a stronger injection for receiver is needed. Moreover, the new decoding method can broaden the range of injection strength acceptable for good decoding quality. Different message encryption techniques are tested, and the result is similar to that of the common decoding method, indicative of the fact that the message encoded by using Chaotic Modulation (CM) can be best recovered by the new decoding method owning to the essence of this encryption technique.

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Physically enhanced secure wavelength division multiplexing chaos communication using multimode semiconductor lasers

Jiang

Xue

et al. 2016

Nonlinear Dyn

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Influence of the decoding process on the performance of chaos encrypted optical communication systems

Cited by 48 publications

References 24 publications

Coherence Resonance in Optical Feedback Chaos: Hiding Frequency in Chaos Communication

Coherence Resonance in Optical Feedback Chaos: Hiding Frequency in Chaos Communication

Performance of a new decoding method used in open-loop all-optical chaotic communication system

Physically enhanced secure wavelength division multiplexing chaos communication using multimode semiconductor lasers

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