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Electro-optic delay oscillator with nonlocal nonlinearity: Optical phase dynamics, chaos, and synchronization.
Roman Lavrov1, Michael Peil, Maxime Jacquot
1Department of Optics, UMR CNRS FEMTO-ST 6174, University of Franche-Comté, 16 Route de Gray, 25030 Besançon Cedex, France.
Summary
This study demonstrates nonlinear optical phase dynamics using an electro-optic delay oscillator. The system exhibits GHz oscillations and broadband phase-chaos, with potential for chaos communication systems.
Area of Science:
- Nonlinear Optics
- Photonics
- Chaos Theory
Background:
- Nonlinear optical phenomena are crucial for advanced photonic applications.
- Electro-optic systems offer tunable control over optical signals.
- Chaos dynamics in optical systems are of interest for secure communications.
Purpose of the Study:
- To experimentally demonstrate nonlinear optical phase dynamics generation.
- To investigate the dynamics of an electro-optic delay oscillator with a novel nonlinear element.
- To explore potential applications in microwave photonics and chaos communication.
Main Methods:
- Utilized an electro-optic delay oscillator architecture.
- Incorporated a linear phase modulator, delay line, and differential phase-shift keying demodulator (DPSK-d).
- Characterized system dynamics by analyzing feedback gain parameter dependence.
Main Results:
- Observed regular GHz oscillations, approximately half the DPSK-d free spectral range.
- Demonstrated pronounced broadband phase-chaotic dynamics.
- Achieved high-quality, broadband phase-chaos synchronization between an emitter-receiver pair.
Conclusions:
- The electro-optic delay oscillator effectively generates nonlinear optical phase dynamics.
- The observed chaotic dynamics are suitable for novel chaos communication systems.
- The system shows promise for microwave photonics applications and secure communication.
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