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All-silicon carrier accumulation modulator based on a lateral MOS-capacitor

All-silicon carrier accumulation modulator based on a lateral MOS-capacitor
All-silicon carrier accumulation modulator based on a lateral MOS-capacitor
In silicon photonics, the carrier depletion scheme has been the most commonly used mechanism for demonstrating high speed electro-optic modulation. However, in terms of phase modulation efficiency, carrier accumulation based devices potentially offer almost an order of magnitude improvement over those based on carrier depletion. Previously reported accumulation modulator designs only considered vertical metal-oxide-semiconductor (MOS)-capacitors, which imposes serious restrictions on the design flexibility and integratability with other photonic components. In this work, for the first time we report experimental demonstration of an all-silicon accumulation phase modulator based on a lateral MOS-capacitor. Using a Mach-Zehnder interferometer (MZI) modulator with a 500-µm-long phase-shifter, we demonstrate high speed modulation up to 25 Gbit/s with a modulation efficiency (VπLπ) of 1.53 V-cm.
Modulators, Integrated optics devices, Optical Interconnects
373-379
Debnath, Kapil
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Thomson, David
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Zhang, Weiwei
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Khokhar, Ali
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Littlejohns, Callum
0fd6585d-030d-4d8f-a411-6fc03e083efa
Byers, James
124172c9-0709-4cb9-992e-acedc2eb02bf
Mastronardi, Lorenzo
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Husain, Muhammad K
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Ibukuro, Kouta
b863054f-39db-4e0e-a2cb-981a86820dda
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Reed, Graham
ca08dd60-c072-4d7d-b254-75714d570139
Saito, Shinichi
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Debnath, Kapil
aa01749d-524b-4464-b90a-af072e92a02f
Thomson, David
17c1626c-2422-42c6-98e0-586ae220bcda
Zhang, Weiwei
1a783f97-c5ac-49e9-a5a0-49b8b2efab36
Khokhar, Ali
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Littlejohns, Callum
0fd6585d-030d-4d8f-a411-6fc03e083efa
Byers, James
124172c9-0709-4cb9-992e-acedc2eb02bf
Mastronardi, Lorenzo
5f46303c-8516-4038-bb3f-8720a3b28d25
Husain, Muhammad K
92db1f76-6760-4cf2-8e30-5d4a602fe15b
Ibukuro, Kouta
b863054f-39db-4e0e-a2cb-981a86820dda
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Reed, Graham
ca08dd60-c072-4d7d-b254-75714d570139
Saito, Shinichi
14a5d20b-055e-4f48-9dda-267e88bd3fdc

Debnath, Kapil, Thomson, David, Zhang, Weiwei, Khokhar, Ali, Littlejohns, Callum, Byers, James, Mastronardi, Lorenzo, Husain, Muhammad K, Ibukuro, Kouta, Gardes, Frederic, Reed, Graham and Saito, Shinichi (2018) All-silicon carrier accumulation modulator based on a lateral MOS-capacitor. Photonics Research, 6 (5), 373-379. (doi:10.1364/PRJ.6.000373).

Record type: Article

Abstract

In silicon photonics, the carrier depletion scheme has been the most commonly used mechanism for demonstrating high speed electro-optic modulation. However, in terms of phase modulation efficiency, carrier accumulation based devices potentially offer almost an order of magnitude improvement over those based on carrier depletion. Previously reported accumulation modulator designs only considered vertical metal-oxide-semiconductor (MOS)-capacitors, which imposes serious restrictions on the design flexibility and integratability with other photonic components. In this work, for the first time we report experimental demonstration of an all-silicon accumulation phase modulator based on a lateral MOS-capacitor. Using a Mach-Zehnder interferometer (MZI) modulator with a 500-µm-long phase-shifter, we demonstrate high speed modulation up to 25 Gbit/s with a modulation efficiency (VπLπ) of 1.53 V-cm.

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All-silicon carrier accumulation modulator based on a lateral MOS-capacitor - Accepted Manuscript
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Accepted/In Press date: 10 February 2018
e-pub ahead of print date: 13 February 2018
Published date: 18 April 2018
Keywords: Modulators, Integrated optics devices, Optical Interconnects

Identifiers

Local EPrints ID: 419332
URI: https://eprints.soton.ac.uk/id/eprint/419332
PURE UUID: bf503ee5-c01c-4e09-99b9-568bfdc80f00
ORCID for Lorenzo Mastronardi: ORCID iD orcid.org/0000-0003-1489-2778
ORCID for Kouta Ibukuro: ORCID iD orcid.org/0000-0002-6546-8873
ORCID for Shinichi Saito: ORCID iD orcid.org/0000-0003-1539-1182

Catalogue record

Date deposited: 10 Apr 2018 16:31
Last modified: 03 Dec 2019 05:32

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Contributors

Author: Kapil Debnath
Author: David Thomson
Author: Weiwei Zhang
Author: Ali Khokhar
Author: Callum Littlejohns
Author: James Byers
Author: Lorenzo Mastronardi ORCID iD
Author: Muhammad K Husain
Author: Kouta Ibukuro ORCID iD
Author: Frederic Gardes
Author: Graham Reed
Author: Shinichi Saito ORCID iD

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