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Integrated Gires-Tournois interferometers based on evanescently coupled ridge resonators

机译:基于进锋耦合的脊谐振器的集成Gires-Tournois干涉仪

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摘要

We propose integrated Gires-Tournois interferometers (GTIs) for guided modes of dielectric slab waveguides. The proposed GTIs consist of one or several dielectric ridge resonators separated by subwavelength-width grooves patterned into an abruptly terminated slab waveguide and operate at oblique incidence of the fundamental transverse-electric-polarized mode. The grooves act as partially reflective mirrors, whereas the end facet of the last ridge works in the total internal reflection regime and reflects all the incident radiation. We show that the single-ridge structure provides a nonlinear staircase-like phase response characteristic for GTIs. By using several properly arranged ridges, one can engineer group delay or group delay dispersion in a required spectral range. As an example, we design a three-ridge GTI providing an almost constant group delay dispersion in a 50-nm-wide wavelength range. The proposed planar GTIs may find application in integrated optical circuits for introducing or compensating for chromatic dispersion. (C) 2020 Optical Society of America
机译:我们提出了集成的Gires-Tournois干涉仪(GTI),用于引导介电平板波导的导向模式。所提出的GTI包括由诸如突然终止的平板波导的子波长宽度槽分开的一个或多个电脊谐振器,并且在基本横向电极 - 极化模式的倾斜入射处操作。凹槽用作部分反射镜,而最后一个脊的端面在全内反射制度中工作,并反映所有入射辐射。我们表明单脊结构为GTI提供了一种非线性楼梯状相位响应特性。通过使用几个正确排列的脊,可以在所需的光谱范围内工程师组延迟或组延迟色散。例如,我们设计三脊GTI,提供50nm宽波长范围内的几乎恒定的组延迟色散。所提出的平面GTI可以在集成光电路中找到应用,用于引入或补偿色散。 (c)2020美国光学学会

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  • 来源
    《Optics Letters》 |2020年第18期|共4页
  • 作者单位

    Russian Acad Sci Branch Fed Sci Res Ctr Crystallog &

    Photon Image Proc Syst Inst 151 Molodogvardeyskaya St Samara 443001 Russia;

    Russian Acad Sci Branch Fed Sci Res Ctr Crystallog &

    Photon Image Proc Syst Inst 151 Molodogvardeyskaya St Samara 443001 Russia;

    Russian Acad Sci Branch Fed Sci Res Ctr Crystallog &

    Photon Image Proc Syst Inst 151 Molodogvardeyskaya St Samara 443001 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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