Design of acousto-optic chaos based secure free-space optical communication links

Ghosh, Anjan; Verma, Pramode K.; Cheng, Samuel; Huck, Robert C.; Chatterjee, Monish Ranjan; Alsaedi, Mohammed

doi:10.1117/12.826813

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…Nevertheless, from Eqs. (11) and (12) one may deduce that the maximum absorber response can be written as Eq. ( 13) if the amplitude is normalized to 1.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…In the nonlinear optical systems, the procedure of route to chaos begins with quasi-periodic state and then, proceeds within the form of an unstable state with exponential growing amplitude and unpredictable behaviour. Although chaos emerges as an instability in the laser output, it can be used as a basis for particular applications like the secure optical communication whereas the encryption procedure is based on interfering a chaotic map [10][11][12]. In spite of this, decryption stage needs the reverse chaotic map which can be hardly implemented.…”

Section: Introductionmentioning

confidence: 99%

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From chaos to stability in soliton mode-locked fibre laser system

Sharif

Ashabi²

2021

Rev. Mex. Fís.

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Intracavity energy rate in a soliton mode-locked fibre laser is derived by solving the Haus master equation. The influence of net gain, absorber response, saturation energy, nonlinearity and absorption are investigated on stable/unstable states. Intracavity modes include the zeroth, first and higher order solitons. Accordingly, chaotic regime as well as breather modes is recognized as a conventional intracavity state. However, tuning the control parameters also results in a reverse bifurcation and thus returning to a stable state. Accordingly, a chaos-based encryption/decryption system is proposed taking the advantage of using a single-side control process; both the encryption and decryption procedures can be achieved by one of the actions of increasing/decreasing the control parameters.

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“…Nevertheless, from Eqs. (11) and (12) one may deduce that the maximum absorber response can be written as Eq. ( 13) if the amplitude is normalized to 1.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From chaos to stability in soliton mode-locked fibre laser system

Sharif

Ashabi²

2021

Rev. Mex. Fís.

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“…One of these techniques is acousto-optical (AO) interaction which includes an optoelectronics feedback system [2,3]. In this technique, OM and even chaos have been observed which are useful in the encryption/decryption blocks of a digital communication system [4]. The second mechanism is a simple Fabry-Perot resonator or ring cavity filled with a material whose refractive index is intensity-dependent [5].…”

Section: Introductionmentioning

confidence: 99%

Controlling the Optical Bistability and Multistability via Atom Localization

Moghannian¹,

Vafafard²,

Mahmoudi³

2016

PIER M

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We investigate optical bistability (OB) and optical multistability (OM) behaviors in a triply driven five-level atomic system. It is shown that the system has bistable behavior and can be controlled by intensity of applied fields. We find that OB switches to OM via interference induced among the Rabi-split resonance. We consider a superposed one-dimension standing wave, generated by two optical fields, and it is demonstrated that the OB and OM behaviors depend on the position of localized atoms as well as the relative phase of applied fields.

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