光子晶体及其应用

光子晶体是一种具有光子带隙的新型功能材料,它独特的物理性质使得光子晶体具有 理论研究价值和广泛的应用前景。主要介绍了光子晶体的基本概念和三维光子晶体的制备技术,并综述了光子晶体的一些物理特性及其在光学、通信、微波方面的应用。     

光子晶体的研究进展

光子晶体是一种具有光子带隙的周期性电介质结构,落在光子带隙中的光不能传播.由于其独特的调节光子传播状态的功能,成为实现光通讯和光子计算机的基础.光子晶体的制备是发展光子晶体的关键,而可见光和近红外波段光子晶体的制备更是难点.本文阐述了光子晶体的概念及其特性后,分别介绍了光子晶体的实验研究和应用研究.实验研究重点介绍了光子晶体的制备方法.应用研究重点介绍了单模发光二极管光、光波导器件和微波天线等.     

光子晶体的研究进展

光子晶体是20世纪80年代末提出的新概念和新材料,由于其奇特的调节光子运动状态的特性,在许多领域具有广泛的应用前景。本文简要介绍了光子晶体的基本概念和主要特征,同时介绍了光子晶体的制备方法和各种理论分析,并对光子晶体的应用前景进行了展望。     

半导体光子晶体有源器件的研究进展

简述了光子晶体在有源器件中应用的物理基础,介绍了几种类型的光子晶体有源器件,包括光子晶体激光器、发光二极管和光电探测器。并探索了光子晶体有源器件的潜在应用前景。     

光子晶体研究进展

详细论述了光子晶体概念提出到现在的十五年的研究进展。在阐述了光子晶体的概念及其抑制自发辐射和光子局域化等特性后，分别介绍了关于光子晶体的理论研究、实验研究和应用研究。理论研究重点介绍了平面波展开法、格林函数法、时域有限差分法、转移矩阵法。实验研究重点介绍了光子晶体的制作方法：打孔法、逐层叠加法、微机械技术、光学方法，反蛋白石法及刻蚀等多种半导体制作技术，同时介绍了光子晶体特性参数的测量。应用研究重点介绍了光晶体光纤和波导、低损耗反射镜和超棱镜、光子晶体微谐振腔、光子晶体滤波器、高效发光二极管和光子晶体偏振器、非线性光学效应、低阈值激光振荡等。     

聚合物光子晶体光纤

石英基光子晶体光纤是目前人们制造最多的光子晶体光纤,与传统结构的石英通信光纤相比具有许多优异性能,在众多领域,尤其是在短距离数据传输和色散补偿器件中有重要的应用。借鉴石英基光子晶体光纤而诞生的聚合物光子晶体光纤同时具有石英光子晶体光纤和传统聚合物光纤所无法比拟的光学性能,可以应用于现代光通信系统,尤其是光纤局域网建设中。简要介绍了石英光子晶体光纤的性能,重点阐述了诞生刚刚3年的聚合物光子晶体光纤的光学性能、制备技术、应用现状和潜力。     

光子晶体红外光谱特性调控及应用研究进展

光子晶体结构所具有的光子带隙和光子局域特性使得处在带隙内的电磁波无法传播,为实现目标红外隐身提供了重要手段。结合光子晶体的结构和工艺特性,总结了现有光子晶体红外光谱特性调控机理、调控设计方法和材料类型,包括周期结构优化、化合物材料、金属材料、等离子和超导材料等引入在光子晶体红外带隙调控方面的应用,并对光子晶体的未来发展进行了展望,以期对光子晶体在带隙调控和目标隐身等需求提供借鉴。     

EBG在微波元件方面的应用

光子晶体是一种具有光子(电磁)带隙的新材料，它独特的物理性质使得光子晶体具有广泛的应用前景。介绍了光子晶体的概念，综述了电磁带隙结构在微波元件的应用和研究进展。     

光子晶体在隐身技术领域的应用研究进展

光子晶体是一类电介质材料周期性排列形成的新型人工结构功能材料,具有独特的调控光子传播的特性,在隐身技术领域具有重要的应用前景.本文主要介绍了光子晶体的基本特性以及在隐身技术领域的应用研究状况.     

光子晶体与光子晶体光纤

光子晶体是20世纪80年代末提出的新概念和新材料，经过十多年的发展，已取得很大进展。光子晶体由于其优越性而具有极好的应用前景，不仅可使光通信领域产生新的变革，同时将对光电子领域及其相关产业产生巨大的影响。介绍了光子晶体及根据其原理开发的光子晶体光纤。     

PBG结构在微波领域的应用

20世纪80年代末出现的光子晶体是一种具有光子带隙的新材料,其特有的性质使得光子晶体具有广泛的应用前景。本文介绍了光子晶体的概念,综述了光子带隙结构在微波领域的典型应用和研究进展。     

High-quality SiO2 Colloidal Crystal Fabricated by Controllable Vertical Deposition Method

Monodispersed silica microspheres with diameter of 353 nm were assembled into photonic crystal in ethanol colloidal suspensions of varied silica volume fraction at different temperature and humidity by means of controllable vertical deposition method. The surface morphology and optical properties were studied by SEM and UV-Vis-NIR. It was found that the high quality silica colloidal photonic crystals were obtained from ethanol solutions with environment temperature between 45℃ and 55℃, humidity between 66% and 76%, the volume fraction of microspheres is between 0.8% and 1.5%, The ordered close-packed photonic crystal fabricated by controllable vertical deposition method had the two photonic bandgaps in the visible light band and near infrared band,     

Extending transmission bandwidth of air-core photonic bandgap fibers

Air-core photonic bandgap fibers offer many unique properties and are critical to many emerging applications. A notable property is the high nonlinear threshold which provides a foundation for applications at high peak powers. The strong interaction of light and air is also essential for a number of emerging applications, especially those based on nonlinear interactions and spectroscopy. For many of those applications, much wider transmission bandwidths are desired to accommodate a wider tuning range or the large number of optical wavelengths involved. Presently, air-core photonic bandgap fibers have a cladding of hexagonal lattice. The densely packed geometry of hexagonal stacking does not allow large nodes in the cladding, which would provide a further increase of photonic bandgaps. On the other hand, a photonic cladding with a square lattice can potentially provide much larger nodes and consequently wider bandgap. In this work, the potentials of much wider bandgap with square lattice cladding is theoretically studied and experimentally demonstrated.     

光子带隙结构在微波方面的应用

20世纪80年代末出现的光子晶体是一种具有光子带隙的新材料,它独特的性质使得光子晶体具有广泛的应用前景。介绍了光子晶体的概念,综述了光子带隙结构在微波领域的应用和研究进展。     

光子晶体与光子晶体光纤的应用

介绍了上世纪80年代末出现的光子晶体的概念和材料特点、光子晶体光纤的性能、国际学术界的研究热点及具有深远影响的应用领域。     

FDTD方法分析光子带隙微带结构

本文采用时域有限差分法分析计算了一维光子带隙微带结构的S参数,并设计制作了光子带隙（PBG）微带线,进行了测量。将计算结果与测量结果对比可以看出两者吻合得比较好,说明采用的分析方法是有效的。     

Study of Photonic Crystal Slow-Wave Circuits

In this paper, relations between photonic band gaps and operating mode of slow-wave circuits constructed by photonic crystals are discussed, and methods for computing photonic band gaps and determining the operating band are given. As an example, a slow-wave circuit containing two-dimensional photonic crystals is analyzed. The results explain that complete photonic band gap is not necessary for traveling wave tubes, and more than one defect-mode maybe coexists inside one photonic band gap. If there have no complete photonic band gap, special input and output circuits capable of customizing modes are necessary. Compared with conventional traveling wave tubes, the numerical results do not suggest the bandwidth of the photonic crystal traveling wave tube is wider, and the interaction impedance is lower. This work was supported in part by the National Natural Science Foundation of China under Grant 60532010 and 60401005. The authors are with University of Electronic Technology and Science of China, Chengdu, China, 610054.     

Bandgap analysis of 2D photonic crystals with Auxiliary Functions of Generalized Scattering Matrix (AFGSM) method

In this paper, an accurate and rapid method is presented to characterize bandgaps of photonic crystals (PCs) constituted by two-dimensional (2D) arrays of dielectric rods with rectangular and circular cross sections. The transmittance and reflectance spectrums of finitely periodic 2D PCs are analyzed using the combination of Rigorous Coupled Wave Analysis (RCWA) and Generalized Scattering Matrix (GSM) methods. In the proposed method, band-edge frequencies of infinitely periodic 2D PCs are determined via Auxiliary Functions of Generalized Scattering Matrix (AFGSM) method using RCWA as a sub-block code. Numerical investigations show that estimating the band-edge frequencies of ideal 2D PCs via AFGSM method is identical with determining the bandgaps of the finite periodic global structure. The high convergence rate of the proposed technique also allows us to perform a bandgap characterization including the higher order Floquet modes without solving the eigenvalue equations for each cascaded layer. Furthermore, the variation of bandgaps when modifying the incidence angle, physical and geometrical parameters are presented for both TE and TM polarizations. The effect of introducing defect in 2D PC structure and resulting band natures are outlined. Our results are in excellent agreement with both theoretical and experimental results in the literature.     

光子晶体制备方法最新进展

光子晶体是一种介电常数随空间呈周期性变化的村料。具有光子带隙结构(Photonic Band Cap)的光子晶体,可以调制光子的状态模式。其潜在用途十分广泛。本文介绍了光子晶体的制备方法及其进展。