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Parametric optimization of fiber to waveguide coupler using Bragg gratings

机译:使用布拉格光栅的光纤到波导耦合器的参数优化

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摘要

The uniform grating coupler which consists of two pairs of reflector layers in the substrate region has been proposed to couple the optical power from single mode fiber to standard 220nm silicon-on-insulator waveguide. The efficiency of approximate to 79% in a broadband 3dB bandwidth of approximate to 150nm is achieved for uniform Bragg grating coupler devices. Further, by making a sequence of chirped and uniform grating, the power coupling efficiency of approximate to 98% at 1550nm wavelength and 3dB bandwidth of 35nm is achieved. The importance and benefits of reflector layers along with its parametric optimization is thoroughly investigated for the calculation of optimum coupling efficiency. This research mainly focus on fiber-to-waveguide/waveguide-to-fiber coupling design. The major contribution of the research focuses on compact and efficient optical interconnection of coupler devices.
机译:已经提出了由在衬底区域中的两对反射器层组成的均匀光栅耦合器,以将光功率从单模光纤耦合到标准的220nm绝缘体上硅波导。对于均匀的布拉格光栅耦合器设备,在大约150nm的3dB宽带带宽中,可获得大约79%的效率。此外,通过制作一系列of均匀光栅,在1550nm波长和35nm的3dB带宽下可获得大约98%的功率耦合效率。为了计算最佳耦合效率,对反射器层的重要性和益处及其参数优化进行了彻底研究。这项研究主要集中在光纤到波导/波导到光纤的耦合设计上。该研究的主要贡献集中在耦合器设备的紧凑高效的光学互连上。

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