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Mid-infrared waveguides for broadband single-moded guidance

Mid-infrared waveguides for broadband single-moded guidance
Mid-infrared waveguides for broadband single-moded guidance
We present the development of SOI waveguides with low-loss (~1.5 dB/cm) single-moded guidance over an octave of frequency. Broadband single-moded guidance is needed for on-chip mid-infrared spectroscopy and this cannot be provided by conventional waveguide geometries in standard material platforms. The reported waveguides require a simple fabrication process flow and will be widely applicable to different mid-infrared wavelength bands for a variety of sensing applications. We further present a low-loss bend design (0.179 ± 0.031 dB/90°) that overcomes the inherently large bending loss of the waveguides, which is a limiting factor in the utility of the waveguides. We consider different prospective designs for the use of these waveguides in a circuit for a sensing device.
Silicon photonics, absorption spectroscopy, broadband, mid-infrared, sensing, waveguide
0277-786X
SPIE
Stirling, Callum
2b1db9ce-c03c-4380-b371-a92748d7c4b9
Logan, April
e8358307-2b35-4326-bc11-3800a5b82a28
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Reynolds, Jamie
96faa744-02ee-458c-8e48-953ea9e54afe
Qu, Zhibo
5b686d3d-a818-4322-be84-2d7e456e6c43
Bradley, Thomas D.
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Mastronardi, Lorenzo
ea0aef76-de7e-4bdc-85be-1dc62dbf7802
Gardes, Frederic Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Nedeljković, Milos
b64e21c2-1b95-479d-a35c-3456dff8c796
Cheben, Pavel
Ctyroky, Jiri
Molina-Fernandez, Inigo
Stirling, Callum
2b1db9ce-c03c-4380-b371-a92748d7c4b9
Logan, April
e8358307-2b35-4326-bc11-3800a5b82a28
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Reynolds, Jamie
96faa744-02ee-458c-8e48-953ea9e54afe
Qu, Zhibo
5b686d3d-a818-4322-be84-2d7e456e6c43
Bradley, Thomas D.
d4cce4f3-bb69-4e14-baee-cd6a88e38101
Mastronardi, Lorenzo
ea0aef76-de7e-4bdc-85be-1dc62dbf7802
Gardes, Frederic Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Nedeljković, Milos
b64e21c2-1b95-479d-a35c-3456dff8c796
Cheben, Pavel
Ctyroky, Jiri
Molina-Fernandez, Inigo

Stirling, Callum, Logan, April, Cao, Wei, Reynolds, Jamie, Qu, Zhibo, Bradley, Thomas D., Mastronardi, Lorenzo, Gardes, Frederic Y., Mashanovich, Goran Z. and Nedeljković, Milos (2023) Mid-infrared waveguides for broadband single-moded guidance. Cheben, Pavel, Ctyroky, Jiri and Molina-Fernandez, Inigo (eds.) In Proceedings of SPIE: Integrated Optics: Design, Devices, Systems and Applications VII. vol. 12575, SPIE. 4 pp . (doi:10.1117/12.2665590).

Record type: Conference or Workshop Item (Paper)

Abstract

We present the development of SOI waveguides with low-loss (~1.5 dB/cm) single-moded guidance over an octave of frequency. Broadband single-moded guidance is needed for on-chip mid-infrared spectroscopy and this cannot be provided by conventional waveguide geometries in standard material platforms. The reported waveguides require a simple fabrication process flow and will be widely applicable to different mid-infrared wavelength bands for a variety of sensing applications. We further present a low-loss bend design (0.179 ± 0.031 dB/90°) that overcomes the inherently large bending loss of the waveguides, which is a limiting factor in the utility of the waveguides. We consider different prospective designs for the use of these waveguides in a circuit for a sensing device.

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More information

Published date: 31 May 2023
Additional Information: Publisher Copyright: © 2023 SPIE.
Venue - Dates: SPIE Optics + Optoelectronics 2023, , Prague, Czech Republic, 2023-04-24 - 2023-04-27
Keywords: Silicon photonics, absorption spectroscopy, broadband, mid-infrared, sensing, waveguide
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Identifiers

Local EPrints ID: 485719
URI: http://eprints.soton.ac.uk/id/eprint/485719
DOI: doi:10.1117/12.2665590
ISSN: 0277-786X
PURE UUID: c19c5d3d-9162-4b52-963e-f4a649ddde90
ORCID for April Logan: ORCID iD orcid.org/0000-0002-5759-3965
ORCID for Wei Cao: ORCID iD orcid.org/0000-0003-1431-7060
ORCID for Jamie Reynolds: ORCID iD orcid.org/0000-0002-0072-0134
ORCID for Thomas D. Bradley: ORCID iD orcid.org/0000-0001-6568-5811
ORCID for Lorenzo Mastronardi: ORCID iD orcid.org/0000-0003-1489-2778
ORCID for Frederic Y. Gardes: ORCID iD orcid.org/0000-0003-1400-3272
ORCID for Milos Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911

Catalogue record

Date deposited: 15 Dec 2023 17:34
Last modified: 27 Apr 2024 02:19

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Contributors

Author: Callum Stirling
Author: April Logan ORCID iD
Author: Wei Cao ORCID iD
Author: Jamie Reynolds ORCID iD
Author: Zhibo Qu
Author: Thomas D. Bradley ORCID iD
Author: Lorenzo Mastronardi ORCID iD
Author: Frederic Y. Gardes ORCID iD
Author: Goran Z. Mashanovich
Author: Milos Nedeljković ORCID iD
Editor: Pavel Cheben
Editor: Jiri Ctyroky
Editor: Inigo Molina-Fernandez

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