Resonant Leaky-Mode Photonic-Crystal Devices with Engineered Spectra

具有工程光谱的谐振漏模光子晶体器件

• 批准号: 0524383
• 负责人: Robert Magnusson
• 金额: $ 24万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0524383&HistoricalAwards=false
• 关键词: Resonant; Leaky; Mode; Photonic; Crystal

0524383MagnussonThe goal of this project is to conduct analytical, numerical, and experimental research on the resonant leaky modes associated with periodic refractive-index lattices such as gratings and photonic crystals. As shown by numerous simulations, single-layer subwavelength periodic leaky-mode waveguide films with binary profiles can be applied to fashion optical elements that provide a remarkably broad variety of tailored spectral characteristics. These sparse elements with one-dimensional periodicity can function as new types of narrow-line bandpass filters, polarized wideband reflectors, polarizers, polarization-independent elements, and as wideband antireflectors. The project addresses fabrication and characterization of new device concepts based on these structures with the main objectives as follows:1. Develop an analytical model for resonance elements with weakly modulated asymmetric profiles to elucidate the detailed resonance physics and leaky-mode interactions in this limit.2. Numerically quantify spectral enhancements realized by addition of homogeneous layers.3. Numerically characterize the resonant leaky-mode photonic band structure. 4. Numerically quantify resonant leaky-mode spatial field distributions to clarify the leaky-mode interaction dynamics. 5. Fabricate and test resonant elements using silicon-on-insulator wafers.Intellectual merit: This project provides new, creative directions in photonic device research by addressing fundamental phenomena for subwavelength leaky-mode resonant device technologies. The preliminary results indicate that a new class of optical elements is possible and explain how pertinent devices might be implemented. The associated physical properties are explained in terms of the photonic band structure and its relation to the structural symmetry of the elements. The interaction dynamics of the leaky modes at resonance contribute to sculpting the diverse spectral bands observed by numerical simulations. The leaky-mode spectral placement, their spectral density, and their levels of interaction are shown to be fundamentally important in understanding device operation. These ideas merit further theoretical and experimental research and development as proposed.Broader impacts: Single-layer leaky-mode elements can have functionality somewhat comparable to multilayer homogeneous thin-film elements. Traditional thin optical films are applied to design and fabricate elements with diverse spectral features which are widely used in optical systems. The guided-mode resonance elements of interest in this proposal possess analogous spectral versatility but are governed by different physics. Thus, new possibilities in function and applications can be envisioned that may provide complementary capability with the field of thin-film optics. Finally, the project will benefit graduate and undergraduate education and enhance the experience of numerous high school students and teachers attending summer programs in engineering.

0524383MagnussonThe这个项目的目标是进行分析，数值和实验研究的共振泄漏模式与周期性折射率晶格，如光栅和光子晶体。如大量模拟所示，具有二元分布的单层亚波长周期性漏模波导膜可以应用于时尚光学元件，其提供非常广泛的定制光谱特性。这些具有一维周期性的稀疏元件可以用作新型的窄带带通滤波器、偏振宽带反射器、偏振器、偏振无关元件和宽带抗反射器。该项目解决了基于这些结构的新器件概念的制造和表征，主要目标如下：1。建立一个弱调制非对称轮廓谐振元件的分析模型，以阐明该极限下的详细谐振物理和漏模相互作用.数值量化通过增加均匀层实现的光谱增强。3.数值表征共振漏模光子带结构。 4.数值量化共振漏模空间场分布，以阐明漏模相互作用动力学。 5.使用绝缘体上硅晶片制造和测试谐振元件。智力优势：该项目通过解决亚波长漏模谐振器件技术的基本现象，为光子器件研究提供了新的创造性方向。初步结果表明，一类新的光学元件是可能的，并解释如何实现相关的设备。相关的物理性质的光子带结构和它的关系的元素的结构对称性方面的解释。共振时漏模的相互作用动力学有助于塑造通过数值模拟观察到的不同光谱带。泄漏模式的光谱位置，它们的光谱密度，和它们的相互作用的水平被证明是从根本上理解设备操作中的重要。这些想法值得进一步的理论和实验研究和发展proposed.broader影响：单层漏模元件可以有功能有点可比多层均匀薄膜元件。传统的光学薄膜被用来设计和制作具有不同光谱特性的元件，这些元件在光学系统中得到了广泛的应用。在这个提议中感兴趣的导模谐振元件具有类似的光谱多功能性，但由不同的物理学支配。因此，可以设想功能和应用中的新的可能性，其可以提供与薄膜光学领域互补的能力。最后，该项目将有利于研究生和本科教育，并提高了许多高中学生和教师参加暑期工程项目的经验。