Subwavelength focusing and imaging by a multimode optical waveguide

被引：8

作者：

Ao, XY ^{[1
]}

He, SL

机构：

[1] Zhejiang Univ, Joint Res Ctr Photon, Royal Inst Technol, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Ctr Opt & Electromagnet Res, Hangzhou 310027, Peoples R China

[3] Royal Inst Technol, Lab Photon & Microwave Engn, S-16440 Kista, Sweden

来源：

OPTICS LETTERS | 2004年 / 29卷 / 24期

关键词：

D O I：

10.1364/OL.29.002864

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple subwavelength focusing system formed by a straight or bent multimode waveguide is investigated numerically. The simulation results indicate that an appropriately designed multimade waveguide can focus the outgoing waves of a point source and form an image with a full width at half-maximum of less than half a wavelength in the near-field area at the other side of the waveguide. The physical mechanism of the subwavelength focusing for this imaging system is explained. (C) 2004 Optical Society of America.

引用

页码：2864 / 2866

页数：3

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