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Silicon and germanium mid-infrared photonics

Silicon and germanium mid-infrared photonics
Silicon and germanium mid-infrared photonics
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.
0277-786X
Mashanovich, G.Z.
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Reed, G.T.
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Nedeljković, M.
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Soler Penadés, J.
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Mitchell, C.J.
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Khokhar, A.Z.
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Littlejohns, C.J.
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Stanković, S.
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Chen, Xia
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Shen, L.
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Healy, N.
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Peacock, A.C.
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Alonso-Ramos, C.
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Ortega-Moñux, A.
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Wangüemert-Pérez, G.
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Molina-Fernández, I.
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Cheben, P.
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Ackert, J.J.
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Knights, A.P.
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Gardes, F.Y.
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Thomson, D.J.
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Mashanovich, G.Z.
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Reed, G.T.
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Nedeljković, M.
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Soler Penadés, J.
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Mitchell, C.J.
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Khokhar, A.Z.
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Littlejohns, C.J.
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Stanković, S.
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Chen, Xia
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Shen, L.
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Healy, N.
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Peacock, A.C.
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Alonso-Ramos, C.
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Ortega-Moñux, A.
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Wangüemert-Pérez, G.
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Molina-Fernández, I.
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Cheben, P.
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Ackert, J.J.
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Knights, A.P.
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Gardes, F.Y.
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Thomson, D.J.
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Mashanovich, G.Z., Reed, G.T., Nedeljković, M., Soler Penadés, J., Mitchell, C.J., Khokhar, A.Z., Littlejohns, C.J., Stanković, S., Chen, Xia, Shen, L., Healy, N., Peacock, A.C., Alonso-Ramos, C., Ortega-Moñux, A., Wangüemert-Pérez, G., Molina-Fernández, I., Cheben, P., Ackert, J.J., Knights, A.P., Gardes, F.Y. and Thomson, D.J. (2016) Silicon and germanium mid-infrared photonics. Proceedings of SPIE, 9755. (doi:10.1117/12.2212834).

Record type: Article

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.

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More information

Published date: 13 February 2016
Venue - Dates: SPIE Photonics West 2016, San Francisco, United States, 2016-02-13 - 2016-02-18

Identifiers

Local EPrints ID: 443204
URI: http://eprints.soton.ac.uk/id/eprint/443204
ISSN: 0277-786X
PURE UUID: d516af3a-2c7f-481c-853a-71a87e7f348e
ORCID for M. Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911
ORCID for J. Soler Penadés: ORCID iD orcid.org/0000-0002-1706-8533
ORCID for S. Stanković: ORCID iD orcid.org/0000-0001-6154-3138
ORCID for Xia Chen: ORCID iD orcid.org/0000-0002-0994-5401
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

Catalogue record

Date deposited: 14 Aug 2020 16:34
Last modified: 18 Feb 2021 17:23

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Contributors

Author: G.T. Reed
Author: M. Nedeljković ORCID iD
Author: J. Soler Penadés ORCID iD
Author: C.J. Mitchell
Author: A.Z. Khokhar
Author: S. Stanković ORCID iD
Author: Xia Chen ORCID iD
Author: L. Shen
Author: N. Healy
Author: A.C. Peacock ORCID iD
Author: C. Alonso-Ramos
Author: A. Ortega-Moñux
Author: G. Wangüemert-Pérez
Author: I. Molina-Fernández
Author: P. Cheben
Author: J.J. Ackert
Author: A.P. Knights
Author: F.Y. Gardes
Author: D.J. Thomson

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