Erbium-doped fiber ring laser dynamical analysis for chaos message masking scheme

• Autorzy: Ali S. Z. , Islam M. K.

Identyfikatory

DOI

10.5277/oa170306

• Języki publikacji: EN

Abstrakty

EN

A detailed dynamical analysis of erbium-doped fiber ring laser cavity loss configuration for the chaos message masking scheme is carried out to optimize the generation of high quality chaos. A threefold increase in Lyapunov exponent implying higher security, and a significant increase in chaos bandwidth is achieved, both ideal for secure optical communication and nonlinear chaotic applications. The pulsed chaos is chaotic in a pulse time interval in addition to the amplitude resulting in better concealment of data pulses in a time domain. The chaos spectrum is a flat broadband and rich in spikes making spectral detection of a message more difficult. The range of five key parameters for which erbium-doped fiber ring laser retains its chaotic behaviour is also increased significantly reducing the effectiveness of a brute force attack to guess the erbium-doped fiber ring laser parameters. The chaos message masking scheme provides a higher security in comparison with additive chaos modulation scheme for implementation of chaotic optical communication using erbium- doped fiber ring laser. The security of a complete end-to-end chaotic optical communication system is tested by launching a spectral attack to estimate the message signal. The message signal clearly hides in a stronger chaotic signal and its spectral contents are not discernible.

Słowa kluczowe

EN

erbium-doped fiber ring laser chaos; optical chaos; chaos message masking; Lyapunov exponent; secure optical communication

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2017
• Tom: Vol. 47, nr 3
• Strony: 395--410
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Ali S. Z.

• Department of Electrical Engineering, Air University, E-9 Islamabad, Pakistan

autor

Islam M. K.

• Department of Electrical Engineering, Taibah University, Al Madinah Al Munawarah,Kingdom of Saudi Arabia

Bibliografia

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