Design of low-loss tapered waveguide by applying photonic-crystal-based microlenses in telescopic structure

NCU Institutional Repository > 理學院 > 光電科學與工程學系 > 期刊論文 > Item 987654321/50960

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50960

题名:	Design of low-loss tapered waveguide by applying photonic-crystal-based microlenses in telescopic structure
作者:	Tsai,YL;Lan,HC;Lin,SF;Chang,CC;Hsiao,HL;Lee,YC;Chang,JY;Wu,ML
贡献者:	光電科學與工程學系
关键词:	CONVERSION;SPLITTERS
日期:	2010
上传时间:	2012-03-27 18:13:57 (UTC+8)
出版者:	國立中央大學
摘要:	In this paper, the design of low-loss tapered waveguides by applying photonic-crystal-based microlenses is presented. The microlenses are realized by using two-dimensional photonic crystal (PhC) structures with a hexagonal periodic lattice of air-holes. In order to make the PhC structures behave as homogeneous and isotropic microlenses, the PhC structures are designed to operate in the low-frequency domain with light wavelength sufficiently larger than the PhC lattice constant. The effective indices of the PhC are calculated and the structures are properly arranged in microlenslike shapes. By monolithically integrating the effective microlenses in the tapered area between the two optical waveguides with different core dimensions, the wavefront of the eigenmode can be coupled from the larger core to the smaller core effectively and also the radiation loss in the tapered area between the two connected optical waveguides can be effectively suppressed. The results show that the PhC-based microlens in the telescopic structure can serve as an optical element in the tapered waveguide with the advantages of low loss, high efficiency and compactness.
關聯:	OPTICAL REVIEW
显示于类别:	[光電科學與工程學系] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	501	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....