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首页> 外文期刊>Applied optics >Some characteristics of an extremely-short-external-cavity laser diode realized by butt coupling a Fabry-Perot laser diode to a single-mode optical fiber
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Some characteristics of an extremely-short-external-cavity laser diode realized by butt coupling a Fabry-Perot laser diode to a single-mode optical fiber

机译：通过将法布里-珀罗激光二极管对接耦合到单模光纤而实现的极短外腔激光二极管的某些特性

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摘要

When butt coupling a Fabry-Perot laser diode to an extremely closely spaced waveguide (separation less than or equal to a few times the Rayleigh range of the laser beam), there is a trade-off between the optimal power coupling and the variation of the coupled laser diode's operational characteristics. Changes in the butt-coupling configuration parameters influence the coupling efficiency, as well as the strength of the feedback into the laser diode. Using a previously reported phenomenological model that treats the butt-coupled laser diode as an extremely short external-cavity (ESEC) device, we quantitatively describe how the butt-coupling parameters can be used to control the output power, threshold current, wave-length, and relative intensity noise of the ESEC laser diode. Our analyses are supported by experimental results. The importance of choosing the correct coordinate plane for evaluation of the overlap integrals that are used in the model is also discussed.
机译：当将法布里-珀罗（Fabry-Perot）激光二极管对接至非常紧密间隔的波导（间隔小于或等于激光束瑞利范围的几倍）时，在最佳功率耦合与光导纤维的变化之间需要权衡取舍。耦合激光二极管的工作特性。对接耦合配置参数的变化会影响耦合效率以及激光二极管反馈的强度。使用先前报道的将对接耦合激光二极管视为极短外腔（ESEC）器件的现象学模型，我们定量描述了对接耦合参数如何用于控制输出功率，阈值电流，波长以及ESEC激光二极管的相对强度噪声。我们的分析得到实验结果的支持。还讨论了选择正确的坐标平面以评估模型中使用的重叠积分的重要性。

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