Analysis of enhanced stimulated Brillouin scattering in silicon slot waveguides

被引：37
|
作者：
Van Laer, Raphael [1 ,2 ]
Kuyken, Bart [1 ,2 ]
Van Thourhout, Dries [1 ,2 ]
Baets, Roel [1 ,2 ]
机构：
[1] Ghent Univ Imec, Photon Res Grp, Ghent, Belgium
[2] Univ Ghent, Ctr Nano & Biophoton, B-9000 Ghent, Belgium
来源：
OPTICS LETTERS | 2014年 / 39卷 / 05期
关键词：
LIGHT; FIBER;
D O I：
10.1364/OL.39.001242
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Stimulated Brillouin scattering has attracted renewed interest with the promise of highly tailorable integration into the silicon photonics platform. However, significant Brillouin amplification in silicon waveguides has yet to be shown. In an effort to engineer a structure with large photon-phonon coupling, we analyzed both forward and backward Brillouin scattering in high-index-contrast silicon slot waveguides. The calculations predict that gradient forces enhance the Brillouin gain in narrow slots. We estimate a currently feasible gain of about 10(5) W-(1) m(-1) in horizontal slot waveguides, which is an order of magnitude larger than in a stand-alone silicon wire. Such efficient coupling could enable a host of Brillouin technologies on a mass-producible silicon chip. (C) 2014 Optical Society of America
引用
收藏
页码：1242 / 1245
页数：4
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