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Suspended low-loss germanium waveguides for the longwave-infrared
Author(s): A. Osman; M. Nedeljkovic; J. Soler Penades; Y. Wu; Z. Qu; A. Z. Khokhar; G. Z. Mashanovich
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Paper Abstract

Germanium has become a material of high interest for mid-infrared (MIR) integrated photonics due to its complementary metal-oxide-semiconductor (CMOS) compatibility and its wide transparency window covering the 2-15 μm spectral region exceeding the 4 μm and 8 μm limit of the Silicon-on-Insulator (SOI) platform and Si material respectively. Here, we present suspended germanium waveguides operating at wavelengths of 3.8 μm and 7.67 μm with propagation losses of 2.9 ± 0.2 dB/cm and 2.6 ± 0.3 dB/cm respectively.

Paper Details

Date Published: 4 March 2019
PDF: 8 pages
Proc. SPIE 10923, Silicon Photonics XIV, 1092308 (4 March 2019); doi: 10.1117/12.2506553
Show Author Affiliations
A. Osman, Univ. of Southampton (United Kingdom)
M. Nedeljkovic, Univ. of Southampton (United Kingdom)
J. Soler Penades, Univ. of Southampton (United Kingdom)
Y. Wu, Univ. of Southampton (United Kingdom)
Z. Qu, Univ. of Southampton (United Kingdom)
A. Z. Khokhar, Univ. of Southampton (United Kingdom)
G. Z. Mashanovich, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 10923:
Silicon Photonics XIV
Graham T. Reed; Andrew P. Knights, Editor(s)

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