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arXiv 1302.3113physics.optics
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单波导耦合半导体环形激光器

Semiconductor Ring Lasers Coupled by a Single Waveguide

W. Coomans, L. Gelens, G. Van der Sande, G. Mezosi, M. Sorel, J. Danckaert, G. Verschaffelt

摘要:

对单总线波导双向耦合半导体环形激光器的特性进行了理论和实验研究。该配置具有,例如,被建议用作光学存储器和光学神经网络基元。主要结果是,耦合可以使两个环在同一方向上发出激光的状态不稳定,并且它使两个输出端具有相等功率的状态变得活跃。这两者对于光学存储器操作都是不期望的。虽然环之间的耦合是双向的,但由于类似于光学注入激光系统的行为而发生不稳定。

英文摘要:

We experimentally and theoretically study the characteristics of semiconductor ring lasers bidirectionally coupled by a single bus waveguide. This configuration has, e.g., been suggested for use as an optical memory and as an optical neural network motif. The main results are that the coupling can destabilize the state in which both rings lase in the same direction, and it brings to life a state with equal powers at both outputs. These are both undesirable for optical memory operation. Although the coupling between the rings is bidirectional, the destabilization occurs due to behavior similar to an optically injected laser system.

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