@inproceedings{663e7aa72d034ed784cec3bb78bc9030,
title = "Nonlinear response of SiGe waveguides in the mid-infrared",
abstract = "The linear and nonlinear optical response of SiGe waveguides in the mid-infrared are experimentally measured. By cutback measurements we find the linear losses to be less than 1.5dB/cm between 3μm and 5μm, with a record low loss of 0.5dB/cm at a wavelength of 4.75μm. By launching picosecond pulses between 3.25μm and 4.75μm into the waveguides and measuring both their self-phase modulation and nonlinear transmission we find that nonlinear losses can be significant in this wavelength range due to free-carrier absorption induced by multi-photon absorption. This should be considered when engineering SiGe photonic devices for nonlinear applications in the mid-IR.",
keywords = "Integrated optics, Mid-infrared, Nanowires, Nonlinear optics, Silicon Germanium",
author = "L. Carletti and P. Ma and B. Luther-Davies and D. Hudson and C. Monat and S. Madden and Moss, {D. J.} and M. Brun and S. Ortiz and S. Nicoletti and C. Grillet",
year = "2014",
doi = "10.1117/12.2051689",
language = "English",
isbn = "9781628410815",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
booktitle = "Silicon Photonics and Photonic Integrated Circuits IV",
address = "United States",
note = "Silicon Photonics and Photonic Integrated Circuits IV ; Conference date: 14-04-2014 Through 17-04-2014",
}