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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2883–2885

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

Yu-Chi Chang, Vincent Paeder, Lubos Hvozdara, Jean-Michel Hartmann, and Hans Peter Herzig  »View Author Affiliations


Optics Letters, Vol. 37, Issue 14, pp. 2883-2885 (2012)
http://dx.doi.org/10.1364/OL.37.002883


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Abstract

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 μm. The propagation losses were measured with the Fabry–Perot resonance method. The lowest achieved propagation loss is 2.5dB/cm, while the bending loss is measured to be 0.12 dB for a 90° bend with a radius of 115 μm.

© 2012 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(230.7380) Optical devices : Waveguides, channeled

ToC Category:
Optical Devices

History
Original Manuscript: May 1, 2012
Manuscript Accepted: May 29, 2012
Published: July 11, 2012

Citation
Yu-Chi Chang, Vincent Paeder, Lubos Hvozdara, Jean-Michel Hartmann, and Hans Peter Herzig, "Low-loss germanium strip waveguides on silicon for the mid-infrared," Opt. Lett. 37, 2883-2885 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-14-2883

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