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Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared

Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared
Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared
The nonlinear absorption properties of a germanium-on-silicon waveguide have been characterized across the two-photon absorption (TPA) transmission window. The results show that the TPA parameters in germanium waveguides are much stronger than the peak values in silicon, in good agreement with selected measurements conducted in bulk materials. Exploiting the large nonlinear absorption near the bandedge, efficient all-optical modulation is achieved with a modulation depth of ~8dB and a response time <5ps.

Currently under review.
0146-9592
2213-2216
Shen, Li
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Mitchell, C.J.
0e48c936-a405-434d-818a-d83e382aa826
Soler Penadés, J.
f18f3619-0d71-4547-95fd-dd38c37b7adb
Nedeljković, M.
b64e21c2-1b95-479d-a35c-3456dff8c796
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Shen, Li
f45b1185-ca40-4af3-8b79-d444dc11dc8f
Healy, N.
26eec85c-8d12-4f21-a67a-022f8dc2daab
Mitchell, C.J.
0e48c936-a405-434d-818a-d83e382aa826
Soler Penadés, J.
f18f3619-0d71-4547-95fd-dd38c37b7adb
Nedeljković, M.
b64e21c2-1b95-479d-a35c-3456dff8c796
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Peacock, A.C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Shen, Li, Healy, N., Mitchell, C.J., Soler Penadés, J., Nedeljković, M., Mashanovich, G.Z. and Peacock, A.C. (2015) Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared. Optics Letters, 40 (10), 2213-2216. (doi:10.1364/OL.40.002213).

Record type: Article

Abstract

The nonlinear absorption properties of a germanium-on-silicon waveguide have been characterized across the two-photon absorption (TPA) transmission window. The results show that the TPA parameters in germanium waveguides are much stronger than the peak values in silicon, in good agreement with selected measurements conducted in bulk materials. Exploiting the large nonlinear absorption near the bandedge, efficient all-optical modulation is achieved with a modulation depth of ~8dB and a response time <5ps.

Currently under review.

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More information

Accepted/In Press date: 17 April 2015
Published date: 2015
Related URLs:
Organisations: Optoelectronics Research Centre, Photonic Systems Circuits & Sensors
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 376061
URI: http://eprints.soton.ac.uk/id/eprint/376061
DOI: doi:10.1364/OL.40.002213
ISSN: 0146-9592
PURE UUID: ca22299c-d9f9-485f-b69d-da6a8cde1f8a
ORCID for C.J. Mitchell: ORCID iD orcid.org/0000-0001-9773-8842
ORCID for J. Soler Penadés: ORCID iD orcid.org/0000-0002-1706-8533
ORCID for M. Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911
ORCID for G.Z. Mashanovich: ORCID iD orcid.org/0000-0003-2954-5138
ORCID for A.C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

Catalogue record

Date deposited: 15 Apr 2015 14:08
Last modified: 29 Oct 2024 02:45

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Contributors

Author: Li Shen
Author: N. Healy
Author: C.J. Mitchell ORCID iD
Author: J. Soler Penadés ORCID iD
Author: M. Nedeljković ORCID iD
Author: G.Z. Mashanovich ORCID iD
Author: A.C. Peacock ORCID iD

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