Low-loss germanium strip waveguides on silicon for the mid-infrared

被引：144

作者：

Chang, Yu-Chi ^{[1
]}

Paeder, Vincent ^{[1
]}

Hvozdara, Lubos ^{[1
]}

Hartmann, Jean-Michel ^{[2
]}

Herzig, Hans Peter ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Opt & Photon Technol Lab, CH-2000 Neuchatel, Switzerland

[2] CEA LETI, F-38054 Grenoble, France

来源：

OPTICS LETTERS | 2012年 / 37卷 / 14期

关键词：

TEMPERATURE; LASERS;

D O I：

10.1364/OL.37.002883

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Mid-infrared photonics in silicon needs low-loss integrated waveguides. While monocrystalline germanium waveguides on silicon have been proposed, experimental realization has not been reported. Here we demonstrate a germanium strip waveguide on a silicon substrate. It is designed for single mode transmission of light in transverse magnetic (TM) polarization generated from quantum cascade lasers at a wavelength of 5.8 mu m. The propagation losses were measured with the Fabry-Perot resonance method. The lowest achieved propagation loss is 2.5 dB/cm, while the bending loss is measured to be 0.12 dB for a 90 degrees bend with a radius of 115 mu m. (C) 2012 Optical Society of America

引用

页码：2883 / 2885

页数：3

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