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Mid-infrared suspended waveguide platform and building blocks

Mid-infrared suspended waveguide platform and building blocks
Mid-infrared suspended waveguide platform and building blocks

In this work, the authors present their recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguides with subwavelength metamaterial cladding. The platform has some intrinsic advantages, which make it a very promising candidate for sensing applications in the molecular fingerprint region. Specifically, it can cover the full transparency window of silicon (up to a wavelength of 8 μm), only requires one lithographic etch-step and can be designed for strong light-matter interaction. Design rules, practical aspects of the fabrication process and experimental results of a complete set of elemental building blocks operating at two very different wavelengths, 3.8 and 7.7 μm, are discussed. Propagation losses as low as 0.82 dB/cm at λ0 = 3.8 μm and 3.1 dB/cm at λ0 = 7.7 μm are attained for the interconnecting waveguides.

1751-8768
55-61
Sánchez-Postigo, Alejandro
81499766-b4c1-48ce-8143-9bdd49621d81
Wangüemert-Pérez, Juan Gonzalo
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Soler Penadés, Jordi
f18f3619-0d71-4547-95fd-dd38c37b7adb
Ortega-Moñux, Alejandro
2187ad4e-6b90-4354-83ce-da964b85e0fe
Nedeljković, Milos
b64e21c2-1b95-479d-a35c-3456dff8c796
Halir, Robert
e3f8d90b-0067-4e1a-a6b1-0217c342dd55
El Mokhtari Mimun, Faysal
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Cheng, Yolanda Xu
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Qu, Zhibo
ff376b43-4352-4bd2-8420-c1c6cfccd45c
Khokhar, Ali Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Osman, Ahmed
eb387b50-c718-47df-ac90-97b2efd3e335
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Littlejohns, Callum G.
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Cheben, Pavel
ab8ffd13-bc5c-44cb-88ed-605e3c347848
Mashanovich, Goran Z.
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Molina-Fernández, Íñigo
e7b4acfd-266a-410b-b4b6-1a9c482c77a0
Sánchez-Postigo, Alejandro
81499766-b4c1-48ce-8143-9bdd49621d81
Wangüemert-Pérez, Juan Gonzalo
e47666bd-f999-42e2-a234-0745e356c30c
Soler Penadés, Jordi
f18f3619-0d71-4547-95fd-dd38c37b7adb
Ortega-Moñux, Alejandro
2187ad4e-6b90-4354-83ce-da964b85e0fe
Nedeljković, Milos
b64e21c2-1b95-479d-a35c-3456dff8c796
Halir, Robert
e3f8d90b-0067-4e1a-a6b1-0217c342dd55
El Mokhtari Mimun, Faysal
621f299e-4422-4150-91b2-ea30872fc509
Cheng, Yolanda Xu
68c1d050-3f89-4898-8e54-041157fe1580
Qu, Zhibo
ff376b43-4352-4bd2-8420-c1c6cfccd45c
Khokhar, Ali Z.
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Osman, Ahmed
eb387b50-c718-47df-ac90-97b2efd3e335
Cao, Wei
5202fa2b-a471-45d4-84e9-9104dffdbbfc
Littlejohns, Callum G.
0fd6585d-030d-4d8f-a411-6fc03e083efa
Cheben, Pavel
ab8ffd13-bc5c-44cb-88ed-605e3c347848
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Molina-Fernández, Íñigo
e7b4acfd-266a-410b-b4b6-1a9c482c77a0

Sánchez-Postigo, Alejandro, Wangüemert-Pérez, Juan Gonzalo, Soler Penadés, Jordi, Ortega-Moñux, Alejandro, Nedeljković, Milos, Halir, Robert, El Mokhtari Mimun, Faysal, Cheng, Yolanda Xu, Qu, Zhibo, Khokhar, Ali Z., Osman, Ahmed, Cao, Wei, Littlejohns, Callum G., Cheben, Pavel, Mashanovich, Goran Z. and Molina-Fernández, Íñigo (2019) Mid-infrared suspended waveguide platform and building blocks. IET Optoelectronics, 13 (2), 55-61. (doi:10.1049/iet-opt.2018.5067).

Record type: Article

Abstract

In this work, the authors present their recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguides with subwavelength metamaterial cladding. The platform has some intrinsic advantages, which make it a very promising candidate for sensing applications in the molecular fingerprint region. Specifically, it can cover the full transparency window of silicon (up to a wavelength of 8 μm), only requires one lithographic etch-step and can be designed for strong light-matter interaction. Design rules, practical aspects of the fabrication process and experimental results of a complete set of elemental building blocks operating at two very different wavelengths, 3.8 and 7.7 μm, are discussed. Propagation losses as low as 0.82 dB/cm at λ0 = 3.8 μm and 3.1 dB/cm at λ0 = 7.7 μm are attained for the interconnecting waveguides.

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Mid-infrared suspended waveguide platform and building blocks - Accepted Manuscript
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More information

Accepted/In Press date: 11 October 2018
e-pub ahead of print date: 21 March 2019
Published date: 1 April 2019

Identifiers

Local EPrints ID: 430579
URI: https://eprints.soton.ac.uk/id/eprint/430579
ISSN: 1751-8768
PURE UUID: 108ebfa9-f046-42b4-864c-4767e9642c2f
ORCID for Jordi Soler Penadés: ORCID iD orcid.org/0000-0002-1706-8533
ORCID for Milos Nedeljković: ORCID iD orcid.org/0000-0002-9170-7911
ORCID for Ahmed Osman: ORCID iD orcid.org/0000-0001-6575-3861

Catalogue record

Date deposited: 03 May 2019 16:30
Last modified: 20 Jul 2019 00:37

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Contributors

Author: Alejandro Sánchez-Postigo
Author: Juan Gonzalo Wangüemert-Pérez
Author: Alejandro Ortega-Moñux
Author: Milos Nedeljković ORCID iD
Author: Robert Halir
Author: Faysal El Mokhtari Mimun
Author: Yolanda Xu Cheng
Author: Zhibo Qu
Author: Ali Z. Khokhar
Author: Ahmed Osman ORCID iD
Author: Wei Cao
Author: Callum G. Littlejohns
Author: Pavel Cheben
Author: Íñigo Molina-Fernández

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