Nanoplasmonic couplers and modulators based on metal-insulator-metal structures

被引：6

作者：

Lu, Zhaolin ^{[1
]}

Yang, Ruoxi ^{[1
]}

Wahsheh, Rami A. ^{[1
]}

Abushagur, M. A. G. ^{[1
]}

机构：

[1] Rochester Inst Technol, Rochester, NY 14623 USA

来源：

INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XIV | 2010年 / 7604卷

关键词：

Plasmonics; coupler; integration; optics; SLOT WAVE-GUIDE; SURFACE; STRIP;

D O I：

10.1117/12.842084

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a "slot-to-slot" coupler to convert power between optical and metal-insulator-metal (MIM) plasmonic modes. Coupling efficiency of larger than 60% is obtained from 2D FDTD simulation. Based on this prototype, a quasi-MIM plasmonic junction is demonstrated using e-beam lithography onto an SOI substrate. The junction is formed by depositing a thin layer of gold (similar to 20 nm) on part of a dielectric slot. When probed by 1520-nm laser, coupling efficiency of 36% is achieved for a 500-nm long quasi-MIM junction. Optical modulation is under investigation by pumping the device using visible light to change the optical property of gold.

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页数：8

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