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Proceedings Paper

Highly integrated planar lightwave circuits based on plasmonic and Si nano-waveguides
Author(s): Sailing He; Zhanghua Han; Liu Liu; Daoxin Dai
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Paper Abstract

Planar lightwave circuits (PLC) based on nanophotonic waveguides are becoming more and more attractive because of their ultrasmall sizes and possibility for realizing large scale monolithic integration with a very high integration density. In this paper we discuss two attractive types of nanophotonic waveguides based on dielectrics or metals. For the dielectric type, a silicon-on-insulator (SOI) strip waveguide is considered, and ultra-compact photonic integrated devices such as polarization-insensitive arrayed waveguide grating (de)multiplexers are obtained. Based on the fact that light can be confined tightly in a single interface between a metal and dielectric, a surface plasmon (SP) waveguide can offer a tight confinement for the light field. The cross-sectional size of an SP waveguide could be pushed down to tens of nanometers, i.e. beyond the diffraction limit. An accurate anaylysis for an SP waveguide formed by a dielectric nano-trench in a metal is presented. A novel subwavelength index-guided multimode plasmonic waveguide is introduced and an ultra-compact MMI power splitter is designed.

Paper Details

Date Published: 5 October 2006
PDF: 15 pages
Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 635121 (5 October 2006); doi: 10.1117/12.691140
Show Author Affiliations
Sailing He, Royal Institute of Technology (Sweden)
Zhejiang Univ. (China)
Zhanghua Han, Royal Institute of Technology (Sweden)
Zhejiang Univ. (China)
Liu Liu, Royal Institute of Technology (Sweden)
Zhejiang Univ. (China)
Daoxin Dai, Royal Institute of Technology (Sweden)
Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6351:
Passive Components and Fiber-based Devices III
Sang Bae Lee; Yan Sun; Kun Qiu; Simon C. Fleming; Ian H. White, Editor(s)

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