Silicon ring resonator-coupled Mach-Zehnder interferometers for the Fano resonance in the mid-IR
Silicon ring resonator-coupled Mach-Zehnder interferometers for the Fano resonance in the mid-IR
We present ring resonator (RR)-coupled Mach–Zehnder interferometers (MZIs) based on silicon-on-insulator rib waveguides, operating around the mid-IR wavelength of 3.8 μm. A number of different photonic integrated devices have been designed and fabricated experimentally to obtain the asymmetric Fano resonances in the mid-IR. We have investigated the influence of the coupling efficiency between the RR and the MZI as well as the phase shift between the two arms of the MZI on the Fano-type resonance spectral features, in agreement with theoretical predictions. Finally, wavelength-dependent Fano transmittances have been successfully measured with insertion losses up to ∼1 dB and extinction ratios of ∼20 dB. A slope of sharp Fano resonances as high as −574.6/μm has been achieved and estimated to be 35.5% higher than the slope of single RR Lorentzian-type resonances.
8769-8776
Troia, Benedetto
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Soler Penadés, Jordi
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Qu, Zhibo
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Khokhar, Ali
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Osman, Ahmed
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Wu, Yangbo
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Stirling, Callum
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Nedeljković, Miloš
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Passaro, Vittorio M.N.
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Mashanovich, Goran Z.
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1 November 2017
Troia, Benedetto
e90140d1-2449-4ca0-b2d4-aac7a1464c5c
Soler Penadés, Jordi
f18f3619-0d71-4547-95fd-dd38c37b7adb
Qu, Zhibo
ff376b43-4352-4bd2-8420-c1c6cfccd45c
Khokhar, Ali
2eedd1cc-8ac5-4f8e-be25-930bd3eae396
Osman, Ahmed
eb387b50-c718-47df-ac90-97b2efd3e335
Wu, Yangbo
000d8846-20f2-4cea-b496-f6f4b73a171f
Stirling, Callum
2b1db9ce-c03c-4380-b371-a92748d7c4b9
Nedeljković, Miloš
b64e21c2-1b95-479d-a35c-3456dff8c796
Passaro, Vittorio M.N.
787696b6-5fbe-4ec7-9a7f-b76b132ac819
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Troia, Benedetto, Soler Penadés, Jordi, Qu, Zhibo, Khokhar, Ali, Osman, Ahmed, Wu, Yangbo, Stirling, Callum, Nedeljković, Miloš, Passaro, Vittorio M.N. and Mashanovich, Goran Z.
(2017)
Silicon ring resonator-coupled Mach-Zehnder interferometers for the Fano resonance in the mid-IR.
Applied Optics, 56 (31), .
(doi:10.1364/AO.56.008769).
Abstract
We present ring resonator (RR)-coupled Mach–Zehnder interferometers (MZIs) based on silicon-on-insulator rib waveguides, operating around the mid-IR wavelength of 3.8 μm. A number of different photonic integrated devices have been designed and fabricated experimentally to obtain the asymmetric Fano resonances in the mid-IR. We have investigated the influence of the coupling efficiency between the RR and the MZI as well as the phase shift between the two arms of the MZI on the Fano-type resonance spectral features, in agreement with theoretical predictions. Finally, wavelength-dependent Fano transmittances have been successfully measured with insertion losses up to ∼1 dB and extinction ratios of ∼20 dB. A slope of sharp Fano resonances as high as −574.6/μm has been achieved and estimated to be 35.5% higher than the slope of single RR Lorentzian-type resonances.
Text
Silicon ring resonator-coupled Mach-Zehnder
- Accepted Manuscript
More information
Accepted/In Press date: 4 October 2017
e-pub ahead of print date: 31 October 2017
Published date: 1 November 2017
Identifiers
Local EPrints ID: 416394
URI: http://eprints.soton.ac.uk/id/eprint/416394
ISSN: 0003-6935
PURE UUID: bf87ba18-4a17-4e09-81d9-4deb92e2892c
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Date deposited: 15 Dec 2017 17:30
Last modified: 29 Oct 2024 02:45
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Contributors
Author:
Benedetto Troia
Author:
Jordi Soler Penadés
Author:
Zhibo Qu
Author:
Ali Khokhar
Author:
Ahmed Osman
Author:
Yangbo Wu
Author:
Callum Stirling
Author:
Miloš Nedeljković
Author:
Vittorio M.N. Passaro
Author:
Goran Z. Mashanovich
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