【作者】 钟树菊；

【导师】 洪伟；

【作者基本信息】 华中科技大学 ， 物理电子学， 2009， 硕士

【摘要】 近年来,微环谐振腔是光子集成领域研究的一个新热点,国内外研究者对其展开了广泛深入的理论和实验研究。由于具有成本低、紧凑的结构、插入损耗小、串扰低、易于集成等优点,微环谐振腔被认为是未来超大规模光子集成的基石。本论文以光延时为应用背景,利用载流子速率方程和光场传播方程建立仿真模型,对全通有源微环谐振器的动态特性进行数值模拟。主要内容有:(1)介绍了微环谐振腔的工作原理,并根据微环谐振腔的传递函数,模拟了上下路结构微环谐振腔和全通微环谐振腔的传输特性以及全通结构微环谐振腔的光延时特性。(2)根据耦合模理论,建立了有源和无源两平行直波导的耦合模型,讨论了相位匹配和相位失配两种情况下的光场传输特性。在此基础上模拟计算了无源直波导和有源弯曲波导的耦合,分别讨论了弯曲半径、入射光功率、耦合间隔层厚度对耦合系数、耦合长度、振幅耦合系数的影响。(3)采用分段模型,对有源波导进行了静态和动态模拟。(4)结合无源直波导与有源弯曲波导耦合模型和半导体光放大器分段模型对全通有源微环谐振腔的动态特性进行了数值模拟。通过静态模拟得到了微环谐振腔的光谱响应曲线;通过动态模拟分析了不同脉冲宽度、不同耦合间隔层厚度以及不同的微环半径对全通有源微环谐振腔的光延时特性的影响。更多还原

【Abstract】 Microring resonator has been a new issue in the field of Photonic integrated in recent years. Researchers at home and abroad put heart into it in theoretical and experimental research. Microring resonator has been respected as the only viable candidate for VLSI photonics due to its advantages of low cost, compact structure, possibility of dense integration, small insertion loss and low crosstalk loss.In this thesis, we establish a simulation model by carrier rate equation and light field propagation equation in the application context of group delay. We study the dynamic characteristic of all-pass active microring resonator with numerical simulation. The main contents are as follows:(1) Introducing the working principle of microring resonator. According to the transfer function of microring resonator, , we simulate the transmission characteristics of the add-drop microring resonator and all-pass microring resonator and the group delay characteristics of all-pass microring resonator.(2) According to the coupled mode theory, we establish the coupled model of active and passive two parallel straight waveguides. Meanwhile, we discuss the transmission characteristics of optical field in phase-matching and phase-mismatching this two conditions. And then, we simulate the coupled situation of passive straight waveguide and active curved waveguide respectively. We discuss the influence of coupling coefficient, coupling length and amplitude coupling coefficient from curved radius, input power and thickness of the coupling interval.(3) We study the static and dynamic simulation of active waveguide by using segment model.(4) Combining passive straight waveguide, active curved waveguide coupled model and segment model of semiconductor optical amplifiers, Numerical Simulation is made through dynamic characteristic of all-pass active microring resonator. We get the Spectral response curves of microring resonator by static characteristic. We get the impact of group delay characteristic for all-pass active microring resonator by dynamic simulation analysis with different pulse width, coupling interval thickness and radius of microring.更多还原