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Ge-on-Si modulators operating at mid-infrared wavelengths up to 8 μm

Ge-on-Si modulators operating at mid-infrared wavelengths up to 8 μm
Ge-on-Si modulators operating at mid-infrared wavelengths up to 8 μm
We report mid-infrared Ge-on-Si waveguide based PIN diode modulators operating at wavelengths of 3.8 μm and 8 μm. Fabricated 1 mm-long electro-absorption devices exhibit a modulation depth of >35 dB with a 7 V forward bias at 3.8 μm, and a similar 1 mm-long Mach-Zehnder modulator has a Vπ·L of 0.47 V·cm. Driven by a 2.5 Vpp RF signal, 60 MHz On-Off Keying modulation was demonstrated. Electro-absorption modulation at 8 μm was demonstrated preliminarily, with the device performance limited by large contact separation and high contact resistance.
2327-9125
828-836
Li, Tiantian
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Nedeljković, Miloš
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Hattasan, Nannicha
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Cao, Wei
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Qu, Zhibo
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Littlejohns, Callum
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Soler Penadés, Jordi
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Mastronardi, Lorenzo
ea0aef76-de7e-4bdc-85be-1dc62dbf7802
Mittal, Vinita
fd5ee9dd-7770-416f-8f47-50ca158b39b0
Benedikovic, Daniel
1ae5b7b3-770d-4919-8581-f37180e9d830
Thomson, David J.
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Gardes, Frederic Y.
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Wu, Hequan
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Zhou, Zhiping
ede65d1a-e058-4e7f-8960-ca6b3a248511
Mashanovich, Goran
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Li, Tiantian
8543c0da-cbf4-4acc-904f-d7d0ec772ec2
Nedeljković, Miloš
b64e21c2-1b95-479d-a35c-3456dff8c796
Hattasan, Nannicha
4f163cbe-eaaa-4771-82c5-af34c9c97fe9
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Qu, Zhibo
5b686d3d-a818-4322-be84-2d7e456e6c43
Littlejohns, Callum
d2837f04-0a83-4bf9-acb2-618aa42a0cad
Soler Penadés, Jordi
f18f3619-0d71-4547-95fd-dd38c37b7adb
Mastronardi, Lorenzo
ea0aef76-de7e-4bdc-85be-1dc62dbf7802
Mittal, Vinita
fd5ee9dd-7770-416f-8f47-50ca158b39b0
Benedikovic, Daniel
1ae5b7b3-770d-4919-8581-f37180e9d830
Thomson, David J.
17c1626c-2422-42c6-98e0-586ae220bcda
Gardes, Frederic Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Wu, Hequan
d4a1427f-843e-422b-ba34-af4429cf9f4c
Zhou, Zhiping
ede65d1a-e058-4e7f-8960-ca6b3a248511
Mashanovich, Goran
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Li, Tiantian, Nedeljković, Miloš, Hattasan, Nannicha, Cao, Wei, Qu, Zhibo, Littlejohns, Callum, Soler Penadés, Jordi, Mastronardi, Lorenzo, Mittal, Vinita, Benedikovic, Daniel, Thomson, David J., Gardes, Frederic Y., Wu, Hequan, Zhou, Zhiping and Mashanovich, Goran (2019) Ge-on-Si modulators operating at mid-infrared wavelengths up to 8 μm. Photonics Research, 7 (8), 828-836. (doi:10.1364/PRJ.7.000828).

Record type: Article

Abstract

We report mid-infrared Ge-on-Si waveguide based PIN diode modulators operating at wavelengths of 3.8 μm and 8 μm. Fabricated 1 mm-long electro-absorption devices exhibit a modulation depth of >35 dB with a 7 V forward bias at 3.8 μm, and a similar 1 mm-long Mach-Zehnder modulator has a Vπ·L of 0.47 V·cm. Driven by a 2.5 Vpp RF signal, 60 MHz On-Off Keying modulation was demonstrated. Electro-absorption modulation at 8 μm was demonstrated preliminarily, with the device performance limited by large contact separation and high contact resistance.

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Ge-on-Si modulators operating at mid-infrared wavelengths up to 8 um - Accepted Manuscript
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More information

Accepted/In Press date: 27 May 2019
e-pub ahead of print date: 28 May 2019
Published date: August 2019
Related URLs:
Learn more about Zepler Institute for Photonics and Nanoelectronics research Learn more about Zepler Institute for Photonics and Nanoelectronics research Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 431548
URI: http://eprints.soton.ac.uk/id/eprint/431548
DOI: doi:10.1364/PRJ.7.000828
ISSN: 2327-9125
PURE UUID: a7565a92-c3e5-4d5f-906a-1db5a4abb0c3
ORCID for Miloš Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911
ORCID for Wei Cao: ORCID iD orcid.org/0000-0003-1431-7060
ORCID for Jordi Soler Penadés: ORCID iD orcid.org/0000-0002-1706-8533
ORCID for Lorenzo Mastronardi: ORCID iD orcid.org/0000-0003-1489-2778
ORCID for Vinita Mittal: ORCID iD orcid.org/0000-0003-4836-5327
ORCID for Frederic Y. Gardes: ORCID iD orcid.org/0000-0003-1400-3272
ORCID for Goran Mashanovich: ORCID iD orcid.org/0000-0003-2954-5138

Catalogue record

Date deposited: 07 Jun 2019 16:30
Last modified: 14 Dec 2024 05:02

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Contributors

Author: Tiantian Li
Author: Miloš Nedeljković ORCID iD
Author: Nannicha Hattasan
Author: Wei Cao ORCID iD
Author: Zhibo Qu
Author: Callum Littlejohns
Author: Jordi Soler Penadés ORCID iD
Author: Lorenzo Mastronardi ORCID iD
Author: Vinita Mittal ORCID iD
Author: Daniel Benedikovic
Author: David J. Thomson
Author: Frederic Y. Gardes ORCID iD
Author: Hequan Wu
Author: Zhiping Zhou
Author: Goran Mashanovich ORCID iD

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