Comparison of two types of synchronization of unidirectionally coupled external-cavity semiconductor lasers

Alexandre Locquet; Cristina Masoller; Patrice Megret; Michel Blondel

doi:10.1117/12.470553

12 June 2002 Comparison of two types of synchronization of unidirectionally coupled external-cavity semiconductor lasers

Alexandre Locquet, Cristina Masoller, Patrice Megret, Michel Blondel

Author Affiliations +

Proceedings Volume 4646, Physics and Simulation of Optoelectronic Devices X; (2002) https://doi.org/10.1117/12.470553
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

We study numerically the synchronization regimes of optical-feedback-induced chaos in unidirectionally coupled semiconductor lasers. Depending on the operating conditions, the receiver laser intensity, I_R(t), synchronizes with the intensity of the optically injected field, I_T(t-t_c), where t_c is the flight time from the transmitter laser to the receiver laser, or synchronizes with I_T(t-t_c+t), where t is the is the external-cavity round-trip time. In the latter case, the intensity produced by the receiver anticipates the injected intensity I_T(t-t_c) by an anticipation time equal to t. We find that synchronization with a lag time t_c-t is much more sensitive to frequency detuning and noise than synchronization with a lag time t_c. Moreover, we also find that though synchronization with a lag time t_c can be obtained using either an external-cavity or an open-loop receiver, the synchronization quality is always better when an external-cavity receiver is used.

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Alexandre Locquet, Cristina Masoller, Patrice Megret, and Michel Blondel "Comparison of two types of synchronization of unidirectionally coupled external-cavity semiconductor lasers", Proc. SPIE 4646, Physics and Simulation of Optoelectronic Devices X, (12 June 2002); https://doi.org/10.1117/12.470553

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