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	Efficient waveguide coupler based on metal materials
	Wu, Wenjun ; Yang, Junbo ; Chang, Shengli ; Zhang, Jingjing ; Lu, Huanyu
	2015
关键词	Efficient coupler SPPs wave Sub-wavelength metal structure
英文摘要	Because of the diffraction limit of light, the scale of optical element stays in the order of wavelength, which makes the interface optics and nano-electronic components cannot be directly matched, thus the development of photonics technology encounters a bottleneck. In order to solve the problem that coupling of light into the subwavelength waveguide, this paper proposes a model of coupler based on metal materials. By using Surface Plasmon Polaritons (SPPs) wave, incident light can be efficiently coupled into waveguide of diameter less than 100 nm. This paper mainly aims at near infrared wave band, and tests a variety of the combination of metal materials, and by changing the structural parameters to get the maximum coupling efficiency. This structure splits the plane incident light with wavelength of 864 nm, the width of 600 nm into two uniform beams, and separately coupled into the waveguide layer whose width is only about 80 nm, and the highest coupling efficiency can reach above 95%. Using SPPs structure will be an effective method to break through the diffraction limit and implement photonics device high-performance miniaturization. We can further compress the light into small scale fiber or waveguide by using the metal coupler, and to save the space to hold more fiber or waveguide layer, so that we can greatly improve the capacity of optical communication. In addition, high-performance miniaturization of the optical transmission medium can improve the integration of optical devices, also provide a feasible solution for the photon computer research and development in the future.; EI; CPCI-S(ISTP); 9672
语种	英语
出处	AOPC 2015: ADVANCED DISPLAY TECHNOLOGY; AND MICRO/NANO OPTICAL IMAGING TECHNOLOGIES AND APPLICATIONS
DOI标识	10.1117/12.2199481
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/436946]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wu, Wenjun,Yang, Junbo,Chang, Shengli,et al. Efficient waveguide coupler based on metal materials. 2015-01-01.

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