Integrated semiconductor lasers represent essential building blocks for integrated optical components and circuits and their stability in frequency is fundamental for the development of numerous frontier applications and engineering tasks. When dense optical circuits are considered, the stability of integrated laser sources can be impaired by the thermal cross-talk generated by the action of neighboring components, leading to a deterioration of the long-term system performance (on the scale of seconds). In this work we show the design and the experimental characterization of a silicon nitride photonic integrated circuit (PIC) that is able to frequency stabilize 16 semiconductor lasers, simultaneously. A stabilized 50 GHz-spaced two-channel system is demonstrated through the detection of the related beating note and the stability of the resulting waveform is characterized via the use of artificially induced thermal cross-talk stimuli.

中文翻译：

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通过 SiN 光子集成电路实现 C 波段半导体激光器的频率稳定


集成半导体激光器是集成光学元件和电路的重要构建模块，其频率稳定性是众多前沿应用和工程任务开发的基础。当考虑密集光路时，集成激光源的稳定性可能会因相邻组件的作用产生的热串扰而受到损害，从而导致长期系统性能（以秒为单位）恶化。在这项工作中，我们展示了氮化硅光子集成电路 (PIC) 的设计和实验表征，该电路能够同时稳定 16 个半导体激光器的频率。通过检测相关跳动音符来演示稳定的 50 GHz 间隔双通道系统，并通过使用人工感应的热串扰刺激来表征所得波形的稳定性。