横向耦合谐振腔VCSEL重新定义高速激光器
Hexagonal Transverse Coupled Cavity VCSEL Redefining the High-Speed Lasers
摘要：
垂直腔面发射激光器（VCSEL）已成为实现数据中心和超级计算机中节能、高速光互连的重要途径。到目前为止，VCSEL在成本效益和可靠性方面最适合大规模生产。然而，对于40 GHz以上的更高速度调制仍然存在关键挑战。在这里，提出了一种通过中心腔耦合的六边形横向耦合腔VCSEL。一个3 dB的滚降调制带宽为45 GHz的演示，这是五倍以上，比传统的VCSEL制造在相同的外延片结构。虽然宇称时间（PT）对称性方法增加了设计激光系统拓扑状态的损失，但在这里，具有增益的根本范式转变引入了对称性破缺。然后，这个想法实现了具有> 30分贝的边模抑制比（SMSR）和> 45分贝的信噪比（SNR）的单模操作。耦合腔系统内部的能量分布也被重新分布，以在空间分离的系统中提供相干增益。因此，吞吐功率比传统VCSEL的吞吐功率高三倍。
英文摘要：
The vertical-cavity surface-emitting lasers (VCSELs) have emerged as a vital approach for realizing energy efficient, high speed optical interconnects in the data center and supercomputers. As of today, VCSEL is the most suitable for mass production in terms of cost-effectiveness and reliability. However, there are still key challenges for higher speed modulation above 40 GHz. Here, a hexagonal transverse coupled cavity VCSEL adiabatically coupled through the center cavity is proposed. A 3-dB roll-off modulation bandwidth of 45 GHz is demonstrated, which is five times greater than a conventional VCSEL fabricated on the same epi-wafer structure. While a parity time (PT) symmetry approaches add loss to engineer the topological state of the laser system, here, a radical paradigm shift with gain introduces symmetry breaking. This idea, then enables a single mode operation with a side-mode suppression-ratio (SMSR) of > 30 decibels and signal-to-noise ratio (SNR) of > 45 decibels. The energy distribution inside the coupled cavity system is also redistributed to provide a coherent gain in a spatially separated system. Consequently, throughput power is three times higher than that of the conventional VCSEL.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
