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Mid-infrared octave spanning supercontinuum generation to 8.5  μm in silicon-germanium waveguides

Sinobad, M.; Monat, C.; Luther-Davies, Barry; Ma, Pan; Madden, Steve; Moss, David J.; Mitchell, Arnan; Allioux, David; Orobtchouk, Regis; Boutami, Salim; Hartmann, Jean-Michel; Fedeli, Jean-Marc; Grillet, C.


Efficient on-chip molecule and bio-agent detection can be achieved by accessing strong molecular absorption lines in the mid-infrared, but it requires high output power broadband mid-IR sources. Here, we report supercontinuum generation in an air-clad Si0.6Ge0.4/Si waveguide that emits a broad spectrum spanning from 3.0 μm to 8.5 μm. These waveguides have anomalous dispersion and low propagation loss (<0.4  dB/cm) in the mid-IR, which leads to a supercontinuum output with a high average power...[Show more]

CollectionsANU Research Publications
Date published: 2018-03-27
Type: Journal article
Source: Optica
DOI: 10.1364/OPTICA.5.000360
Access Rights: Open Access


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