Abstract
It is shown that identical synchronization of two chaotic semiconductor lasers can be achieved by injection of a common optical signal with randomly varying phase. An optical signal with randomly modulated phase is injected into two semiconductor lasers which have chaotic oscillations due to optical feedback. Strong correlation between complex intensity oscillations of the two lasers is observed even though the intensity of the common injection signal is constant. Characteristic properties of this type of synchronization are shown, in particular, the dependence of the synchronization threshold on the injection strength and the rate of phase modulation, and the dependence of the intensity correlation on the difference in phase of optical feedback.
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This work was carried out at NTT Corporation in Japan.
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Goto, Si., Davis, P., Yoshimura, K. et al. Synchronization of chaotic semiconductor lasers by optical injection with random phase modulation. Opt Quant Electron 41, 137 (2009). https://doi.org/10.1007/s11082-009-9333-y
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DOI: https://doi.org/10.1007/s11082-009-9333-y
Keywords
- Semiconductor lasers
- Laser diodes
- Dynamics of nonlinear optical systems
- Optical instabilities
- Optical chaos and complexity
- Optical spatio-temporal dynamics
- Synchronization
- Coupled oscillators