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Proceedings Paper

Silicon and germanium mid-infrared photonics
Author(s): G. Z. Mashanovich; G. T. Reed; M. Nedeljkovic; J. Soler Penades; C. J. Mitchell; A. Z. Khokhar; C. J. Littlejohns; S. Stankovic; X. Chen; L. Shen; N. Healy; A. C. Peacock; C. Alonso-Ramos; A. Ortega-Monux; G. Wanguemert-Perez; I. Molina-Fernandez; P. Cheben; J. J. Ackert; A. P. Knights; F. Y. Gardes; D. J. Thomson
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Paper Abstract

We present three main material platforms: SOI, suspended Si and Ge on Si. We report low loss SOI waveguides (rib, strip, slot) with losses of ~1dB/cm. We also show efficient modulators and detectors realized in SOI, as well as filters and multiplexers. To extend transparency of SOI waveguides, bottom oxide cladding can be removed. We have fabricated low loss passive devices in a suspended platform that employ subwavelength gratings. Ge on Si material can have larger transparency range than suspended Si. We have designed passive devices in this platform, demonstrated all optical modulation and carried out two photon absorption measurements. We have also investigated theoretically free carrier optical modulation in Ge.

Paper Details

Date Published: 13 February 2016
PDF: 6 pages
Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII, 97550W (13 February 2016); doi: 10.1117/12.2212834
Show Author Affiliations
G. Z. Mashanovich, Univ. of Southampton (United Kingdom)
G. T. Reed, Univ. of Southampton (United Kingdom)
M. Nedeljkovic, Univ. of Southampton (United Kingdom)
J. Soler Penades, Univ. of Southampton (United Kingdom)
C. J. Mitchell, Univ. of Southampton (United Kingdom)
A. Z. Khokhar, Univ. of Southampton (United Kingdom)
C. J. Littlejohns, Univ. of Southampton (United Kingdom)
S. Stankovic, Univ. of Southampton (United Kingdom)
X. Chen, Univ. of Southampton (United Kingdom)
L. Shen, Univ. of Southampton (United Kingdom)
N. Healy, Univ. of Southampton (United Kingdom)
A. C. Peacock, Univ. of Southampton (United Kingdom)
C. Alonso-Ramos, Univ. Paris-Sud 11, IEF, CNRS (France)
A. Ortega-Monux, Univ. de Málaga (Spain)
G. Wanguemert-Perez, Univ. de Málaga (Spain)
I. Molina-Fernandez, Univ. de Málaga (Spain)
P. Cheben, National Research Council Canada (Canada)
J. J. Ackert, McMaster Univ. (Canada)
A. P. Knights, McMaster Univ. (Canada)
F. Y. Gardes, Univ. of Southampton (United Kingdom)
D. J. Thomson, Univ. of Southampton (United Kingdom)


Published in SPIE Proceedings Vol. 9755:
Quantum Sensing and Nano Electronics and Photonics XIII
Manijeh Razeghi, Editor(s)

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