Key space enhancement of optical chaos secure communication: chirped FBG feedback semiconductor laser

Wang, D M; Wang, L S; Guo, Yuanyuan; Wang, Y C; Wang, A B

doi:10.1364/oe.27.003065

Cited by 41 publications

(16 citation statements)

References 21 publications

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“…Both transmission power and reflectivity shows no deterioration when chirp profile is applied without altering other parameters. Figure 4 has successfully demonstrated a chirp profile via simulation that satisfy with other studies [21,22]. While having wider Bragg peaks in both reflectivity and transmission, chirped FBGs can have certain suitable purposes.…”

Section: Chirped Profilesupporting

confidence: 74%

Investigation of the Effect of FBG Profiles, Temperature and Transmission Distance for Environmental Sensing & Monitoring

Riza¹,

Go²

2020

Adv. sci. technol. eng. syst. j.

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Section: Chirped Profilesupporting

confidence: 74%

Investigation of the Effect of FBG Profiles, Temperature and Transmission Distance for Environmental Sensing & Monitoring

Riza¹,

Go²

2020

Adv. sci. technol. eng. syst. j.

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“…features into the dynamics which threaten the security of chaos communication [8], limit the key space [9], weaken anti-jamming capabilities [10] and reduce the randomness of bit sequences [11].…”

Section: Introductionmentioning

confidence: 99%

Suppression of Cavity Time-Delay Signature Using Noise-Phase-Modulated Feedback

et al. 2020

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We propose reconfiguration of the conventional feedback scheme to suppress the external-cavity time-delay signature (TDS) by adding noise phase modulation in the feedback of semiconductor laser. Noise-phase-modulated feedback introduces broad band noise frequencies into the feedback light and enables the suppression of the TDS. In this work, by means of simulations, the effect on TDS suppression of phase modulation (PM) index is explored. In addition, the influence of noise bandwidth variation is investigated. Using the auto-correlation function to quantity the TDS, we find that, for a large range of operating parameters, the TDS is significantly suppressed to the noise level and even submerged into the base noise. It is shown that suppression TDS is achievable over a wide operating parameter provided the noise generator bandwidth is of order 10 GHz and the PM index is greater than about 3. The proposed configuration will have widespread applications in contexts where suppression of the TDS is required. INDEX TERMS Chaos, noise phase modulation, time-delay signature.

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“…In these reported results, one can see that both theoretical model and experimental studies are intensively presented to observe the rich nonlinear behaviors including the periodic, quasi-periodic, and chaotic phenomena by judiciously adjusting the strengths of external injections and/or optical feedbacks. The achieved dynamical results are widely used to perform the photonic microwave signals [8,9], secure optical communications [10], optical switching [11], radar [12], all-optical AM-to-FM conversion [13], and radio-over-fiber links [14]. Generally, the conventional quantum well laser has a large line width enhancement factor that results in the large chaotic region with the change of external injection or feedback level [15].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamics in Semiconductor Quantum Dot Laser Subject to Double Delayed Feedback: Numerical Analysis

Bao

2020

Braz J Phys

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In this study, the research on the nonlinear dynamics of semiconductor quantum dot laser with two time-delayed optical feedbacks is numerically investigated. Results show that the nonlinear dynamics behaviors of the laser are very sensitive to the rich system parameters in which both feedback strength and bias current are easily controlled to significantly influence the nonlinear dynamics including the periodic state and chaotic state. By judiciously adjusting the bias current of the laser or the feedback strength in the external cavity, period one, period doubling, quasi-period, and chaos are achieved. The feedback levelrelated bifurcation diagrams are analyzed in detail while fixing another feedback level at a constant or varying the bias current. In addition, the translation variables of the 0-1 test method that are clearly bounded for regular behavior and exhibit the Brownian motion for irregular phenomenon are adopted to further evaluate the periodic state and the chaotic state. These results can give insight into the quantum dot laser-based applications in various optical technologies.

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Key space enhancement of optical chaos secure communication: chirped FBG feedback semiconductor laser

Cited by 41 publications

References 21 publications

Investigation of the Effect of FBG Profiles, Temperature and Transmission Distance for Environmental Sensing & Monitoring

Investigation of the Effect of FBG Profiles, Temperature and Transmission Distance for Environmental Sensing & Monitoring

Suppression of Cavity Time-Delay Signature Using Noise-Phase-Modulated Feedback

Nonlinear Dynamics in Semiconductor Quantum Dot Laser Subject to Double Delayed Feedback: Numerical Analysis

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