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Optical modeling of laterally-corrugated ridge-waveguide gratings

机译:横向波纹脊形波导光栅的光学建模

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The paper presents some model improvements for the optical simulation of laterally-corrugated ridge-waveguide distributed feedback lasers. Simulation results are discussed and design principles for achieving single-longitudinal-mode operation are outlined. The effects of the laterally-corrugated ridge geometry both on the coupling coefficient and on the Bragg wavelength of different transverse modes are presented. The improved modeling has been used to design 980 nm distributed feedback lasers with laterally-corrugated ridge-waveguide third-order gratings. The lasers fabricated using nanoimprint lithography exhibited single-mode operation with 50 dB side-mode suppression ratio.
机译:本文对横向波纹脊形波导分布式反馈激光器的光学仿真提出了一些模型改进。讨论了仿真结果,并概述了实现单纵模运行的设计原理。提出了横向波纹脊的几何形状对耦合系数和不同横向模式的布拉格波长的影响。改进的建模已用于设计带有横向波纹脊形波导三阶光栅的980 nm分布式反馈激光器。使用纳米压印光刻技术制造的激光器表现出单模操作,且副模抑制比为50 dB。

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