基于表面波的新型光子晶体分束器的设计.doc
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基于表面波的新型光子晶体分束器的设计,design of a new type of photonic crystal beamsplitter based on surface wave17900字 40页摘要 光子晶体是由不同折射率的介质周期性排列而成的人工微结构。光子晶体具有光子带隙、局域模等特殊性质。利用这些性质...
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基于表面波的新型光子晶体分束器的设计
Design of a new type of photonic crystal beamsplitter based on surface wave
17900字 40页
摘要 光子晶体是由不同折射率的介质周期性排列而成的人工微结构。光子晶体具有光子带隙、局域模等特殊性质。利用这些性质，光子晶体可以制作许多具有优越性能的光学器件。近年，光子晶体表面波这一性质也被广泛研究，逐渐发现其在生产生活中的应用。通过激发光子晶体-光子晶体表面波的方法，可以对一定频率内的传输光实现输出光的分束，以此特征可以制作光子晶体分束器。
本文通过理论分析和数值模拟，研究了通过激发二维光子晶体表面波实现光束分束从而制作光子晶体分束器的方法。首先介绍了光子晶体现阶段的研究成果及光子晶体中电磁场表征的正常模式。其次，对现阶段的各种光束分束器做简要介绍和分析，对比其优缺点。最后对光子晶体表面波这一性质进行理论研究。通过光子晶体的表面改性，设计了一种新型的组合结构。使用平面波展开法结合超原胞技术对该结构的耦合表面波色散关系进行了研究，研究之后再使用时域有限差分法数值模拟传入该结构中的光波的传输特性。研究结果表明，所提出的新型结构，对一定频率范围内的传输光可以实现输出光的分束，此特征可以用来制作光束分束器。
关键词：光子晶体 表面波 光束分束器
Design of a new type of photonic crystal beamsplitter based on surface wave
Abstract Photonic crystal is a kind of artificial microstructure, which is composed of different refractive index mediums arranged periodically. Photonic crystal has some special properties, such as the photonic band gap, local mode. By using these properties, optical device with many superior performances can made. Recently, with extensive studies of the surface wave of the photonic crystal, it has gradually found the application of photonic crystal in the production and living. By stimulating the surface wave of photonic crystal, light within a certain frequency can realize the beam splitting, which can be used to make photonic crystal splitter.
This paper, through theoretical analysis and numerical simulation, studies the methods of making photonic crystal splitter by stimulating the surface wave of the two-dimensional photonic crystal beam to realize the separation of light beams. First, it introduces the present researches and achievements of photonic crystal as well as the normal form of the characterization of electromagnetic field in photonic crystal. Second, it introduces and analyzed present beam splitters, then compares their advantages and disadvantages. Finally, there is a theory research about the properties of surface wave of photonic crystal. A novel composite structure formed by surface modification photonic crystals is devised. The dispersion relation of coupling surface wave of this new structure is studied by using the plane wave expansion method and super original cell technology. On this basis, it then simulates the transmission characteristics of light beams in this structure by using Finite Difference Time Domain. The research shows that the new structure proposed, can realize the output of beam splitting within a certain frequency range. This feature can be used to make the beam splitter.
Key words Photonic crystal surface wave the beam splitter
目 录
绪 论………………………………………………………………………………………………………………1
第一章 光子晶体概念、性质及应用……………………………………………………………2
1.1 光子晶体简介……………………………………………………………………………………………………….2
1.2 光子晶体的性质…………………………………………………………………………………………………..4
1.3 光子晶体的电磁波理论……………………………………………………………………………………….5
1.4 光子晶体的应用…………………………………………………………………………………………………..8
1.5 论文的主要工作…………………………………………………………………………………………………..9
第二章 光分束器………………………………………………………………………………………….10
2.1 光分束器简介及类型……………………………………………………………………………………………10
2.2 光子晶体分束器……………………………………………………………………………………………………12
2.2.1 光子晶体分束器的研究成果……………………………………………………………………..12
2.2.2 光子晶体分束器中的光开关……………………………………………………………………..13
2.3 本章小结……………………………………………………………………………………………………………….14
第三章 光子晶体表面态………………………………………………………………………………15
3.1 光子晶体表面态的理论基础………………………………………………………………………………..15
3.2 光子晶体表面波导及特性……………………………………………………………………………………16
3.3 光子晶体表面波导的光传输特性和表面波导滤波器…………………………………………17
3.4 真空背景下半无限一维光子晶体的表面态表达式…………………………………………….19
3.5 本章小结………………………………………………………………………………………………………………20
第四章 基于表面波..
Design of a new type of photonic crystal beamsplitter based on surface wave
17900字 40页
摘要 光子晶体是由不同折射率的介质周期性排列而成的人工微结构。光子晶体具有光子带隙、局域模等特殊性质。利用这些性质，光子晶体可以制作许多具有优越性能的光学器件。近年，光子晶体表面波这一性质也被广泛研究，逐渐发现其在生产生活中的应用。通过激发光子晶体-光子晶体表面波的方法，可以对一定频率内的传输光实现输出光的分束，以此特征可以制作光子晶体分束器。
本文通过理论分析和数值模拟，研究了通过激发二维光子晶体表面波实现光束分束从而制作光子晶体分束器的方法。首先介绍了光子晶体现阶段的研究成果及光子晶体中电磁场表征的正常模式。其次，对现阶段的各种光束分束器做简要介绍和分析，对比其优缺点。最后对光子晶体表面波这一性质进行理论研究。通过光子晶体的表面改性，设计了一种新型的组合结构。使用平面波展开法结合超原胞技术对该结构的耦合表面波色散关系进行了研究，研究之后再使用时域有限差分法数值模拟传入该结构中的光波的传输特性。研究结果表明，所提出的新型结构，对一定频率范围内的传输光可以实现输出光的分束，此特征可以用来制作光束分束器。
关键词：光子晶体 表面波 光束分束器
Design of a new type of photonic crystal beamsplitter based on surface wave
Abstract Photonic crystal is a kind of artificial microstructure, which is composed of different refractive index mediums arranged periodically. Photonic crystal has some special properties, such as the photonic band gap, local mode. By using these properties, optical device with many superior performances can made. Recently, with extensive studies of the surface wave of the photonic crystal, it has gradually found the application of photonic crystal in the production and living. By stimulating the surface wave of photonic crystal, light within a certain frequency can realize the beam splitting, which can be used to make photonic crystal splitter.
This paper, through theoretical analysis and numerical simulation, studies the methods of making photonic crystal splitter by stimulating the surface wave of the two-dimensional photonic crystal beam to realize the separation of light beams. First, it introduces the present researches and achievements of photonic crystal as well as the normal form of the characterization of electromagnetic field in photonic crystal. Second, it introduces and analyzed present beam splitters, then compares their advantages and disadvantages. Finally, there is a theory research about the properties of surface wave of photonic crystal. A novel composite structure formed by surface modification photonic crystals is devised. The dispersion relation of coupling surface wave of this new structure is studied by using the plane wave expansion method and super original cell technology. On this basis, it then simulates the transmission characteristics of light beams in this structure by using Finite Difference Time Domain. The research shows that the new structure proposed, can realize the output of beam splitting within a certain frequency range. This feature can be used to make the beam splitter.
Key words Photonic crystal surface wave the beam splitter
目 录
绪 论………………………………………………………………………………………………………………1
第一章 光子晶体概念、性质及应用……………………………………………………………2
1.1 光子晶体简介……………………………………………………………………………………………………….2
1.2 光子晶体的性质…………………………………………………………………………………………………..4
1.3 光子晶体的电磁波理论……………………………………………………………………………………….5
1.4 光子晶体的应用…………………………………………………………………………………………………..8
1.5 论文的主要工作…………………………………………………………………………………………………..9
第二章 光分束器………………………………………………………………………………………….10
2.1 光分束器简介及类型……………………………………………………………………………………………10
2.2 光子晶体分束器……………………………………………………………………………………………………12
2.2.1 光子晶体分束器的研究成果……………………………………………………………………..12
2.2.2 光子晶体分束器中的光开关……………………………………………………………………..13
2.3 本章小结……………………………………………………………………………………………………………….14
第三章 光子晶体表面态………………………………………………………………………………15
3.1 光子晶体表面态的理论基础………………………………………………………………………………..15
3.2 光子晶体表面波导及特性……………………………………………………………………………………16
3.3 光子晶体表面波导的光传输特性和表面波导滤波器…………………………………………17
3.4 真空背景下半无限一维光子晶体的表面态表达式…………………………………………….19
3.5 本章小结………………………………………………………………………………………………………………20
第四章 基于表面波..
