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Integrated nonlinear photonics based on coupled-cavity resonator systems

机译：基于耦合腔谐振器系统的集成非线性光子学

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摘要

Efficient nonlinear optical devices are designed and demonstrated in "photonic molecule''-like coupled-cavity resonator systems on a semiconductor chip. A coupled-cavity resonator may be designed to support distributed supermodes, and to allow independent control of the resonant frequency and linewidth of each supermode. Such control allows reduction of dispersion without compromising effective nonlinearity in the resonator, as well as the design of anisotropic output coupling or radiation that allows optimized nonlinear functions. Therefore this resonator manifests itself as a favorable platform for building nonlinear devices including optical parametric wavelength converters and oscillators based on four-wave mixing that call for different couplings to the signal, pump and idler modes. A physical model based on coupled-mode theory describes all relevant linear and nonlinear processes in triply-resonant microcavities, and a generalization of the usual nonlinear figure of merit is proposed to evaluate the effects of distributed supermodes on nonlinear conversion efficiency in such devices. Experimental work is presented that demonstrates coupled cavity devices for wavelength conversion in crystalline silicon, where two-photon absorption sets conversion efficiency limitations. In addition, an investigation of deposition conditions of hydrogenated amorphous silicon is described where amorphous silicon allows for a higher nonlinear figure of merit than crystalline silicon, promising increased performance in such devices. More generally, mode interference and coupling in coupled-cavity resonators, as a unique degree of freedom in integrated optics, is explored through designs of linear devices including efficient optical filters, wavelength converters, and modulators.
机译：在半导体芯片上的类似于“光子分子”的耦合腔谐振器系统中设计并演示了高效的非线性光学器件，耦合腔谐振器可以设计为支持分布式超模，并允许独立控制谐振频率和线宽这样的控制可以在不损害谐振器有效非线性的情况下减小色散，并且可以通过各向异性输出耦合或辐射设计来优化非线性功能，因此，该谐振器本身是构建包括光学器件在内的非线性器件的理想平台。基于四波混频的参量波长转换器和振荡器，要求对信号，泵浦和惰轮模式进行不同耦合；基于耦合模式理论的物理模型描述了三共振微腔中的所有相关线性和非线性过程，并进行了概括通常的非线性品质因数是用于评估此类设备中分布式超模对非线性转换效率的影响。提出的实验工作演示了用于晶体硅中波长转换的耦合腔器件，其中双光子吸收设置了转换效率限制。另外，描述了对氢化非晶硅的沉积条件的研究，其中非晶硅比晶体硅具有更高的非线性品质因数，有望提高此类器件的性能。更一般而言，通过包括高效光学滤波器，波长转换器和调制器在内的线性器件的设计，探索了耦合腔谐振器中的模式干涉和耦合问题，这是集成光学器件中独特的自由度。

著录项

  • 作者

    Zeng, Xiaoge.;

  • 作者单位

    University of Colorado at Boulder.;

  • 授予单位 University of Colorado at Boulder.;
  • 学科 Physics.;Optics.
  • 学位 Ph.D.
  • 年度 2016
  • 页码 130 p.
  • 总页数 130
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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