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ON THE OPTIMIZATION OF THREE PHASE-SHIFT DISTRIBUTED FEEDBACK LASER STRUCTURES USING MATRIX TECHNIQUES

机译:用矩阵技术优化三相移位分布式反馈激光结构的优化

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This paper presents a numerical procedure for the accurate optimization of a three phase-shift (3PS) distributed feedback (DFB) laser structure. The optimization regards the main figures of merit concerning the laser single longitudinal mode operation: the normalized mode selectivity (S) and the flatness (F). The normalized threshold gain (α_(th) L) is also assessed. A step-by-step description of the numerical method, based in matrix techniques, is performed. S = 0.78 and F = 0.010, with α_(th) L = 1.18 are achieved for the optimized 3PS-DFB laser structure, which strongly improves the performances reported elsewhere relative to optima designs for similar structures. Besides, those results are highly competitive in comparison with the ones achieved with the popular quarterly wavelength-shifted DFB laser structure.
机译:本文提出了一种用于精确优化三相移位(3PS)分布式反馈(DFB)激光结构的数值过程。优化关于激光单纵模操作的优点的主要图:归一化模式选择性和平坦度(F)。还评估归一化阈值增益(α_(Th)L)。执行基于矩阵技术的数值方法的逐步描述。 S = 0.78和f = 0.010,对于优化的3PS-DFB激光结构,实现了α_(th)L = 1.18,这强大地改善了相对于类似结构的Optima设计的其他地方的性能。此外,与流行的季度波长移位的DFB激光结构相比,这些结果具有竞争力。

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