延迟耦合半导体激光器中相位-振幅耦合调制的解析
Unraveling the Phase-amplitude Coupling Modulation in a Delay-Coupled Diode Lasers Functionality
摘要：
本文数值研究了在考虑注入延迟时间的情况下，相位-振幅耦合调制对半导体激光器功率谱的影响。我们发现，随着相位-振幅耦合因子α的变化，系统通过相位翻转分岔，经历了一系列从同相锁定态到反相锁定态的相位转换.此外，我们观察到的频率离散化的签名（频率岛）和揭示的物理机制存在的多稳定性附近的相变制度。在连续的反相到同相锁定区域之间的窗口内，光注入引起α调制，揭示了耦合激光器系统的各种动力学中的显著的普遍特征，其可用于借助于相位控制来控制光子集成紧凑器件的啁啾或脉冲重复率。
英文摘要：
We numerically investigate the effect of phase-amplitude coupling modulation on power spectra in semiconductor lasers subject to optical injection in a face to face configuration, when a non-negligible injection delay time is taken into account. We find that as phase-amplitude coupling factor alpha varies, the system goes through a sequence of phase transactions between In-phase locking states to anti-phase locking states via phase-flip bifurcation. Moreover, we observed the signature of frequency discretization (Frequency Island) and uncovered the physical mechanism for the existence of multi-stability near the phase transitions regimes. Within the windows between successive anti-phases to in-phase locking regions, optical injection induced modulation in alpha, unveiling a remarkable universal feature in the various dynamics of coupled lasers system which could be useful in controlling the chirp or pulse repetition rate of a photonic integrated compact device with the aid of phase control.
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