Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device

We demonstrate a method for power reduction in thermo-optic based Mach-Zehnder interferometer (MZI) by using the multimode region of a 2x2 Multi-Mode-Interferometer (MMI) as the modulation region. The light is circulated through the same multimode region twice and therefore utilizes the already pres...

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Main Authors:	Pant Bharat, Zhang Weiwei, Tran Denh, Banakar Mehdi, Du Han, Yan Xingzhao, Littlejohns Callum G., Reed Graham T., Thomson David J.
Format:	Article
Language:	English
Published:	EDP Sciences 2020-01-01
Series:	EPJ Web of Conferences
Online Access:	https://www.epj-conferences.org/articles/epjconf/pdf/2020/14/epjconf_eosam2020_01007.pdf

id	doaj-7b3ff9d4be044701a0472dea25512b1c
record_format	Article
spelling	doaj-7b3ff9d4be044701a0472dea25512b1c2021-08-02T12:44:50ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012380100710.1051/epjconf/202023801007epjconf_eosam2020_01007Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference devicePant Bharat0Zhang Weiwei1Tran Denh2Banakar Mehdi3Du Han4Yan Xingzhao5Littlejohns Callum G.6Reed Graham T.7Thomson David J.8Optoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonOptoelectronic Research Centre, University of SouthamptonWe demonstrate a method for power reduction in thermo-optic based Mach-Zehnder interferometer (MZI) by using the multimode region of a 2x2 Multi-Mode-Interferometer (MMI) as the modulation region. The light is circulated through the same multimode region twice and therefore utilizes the already present change in temperature leading to additional phase change, and an increase in efficiency. Power saving of 29.6% compared to a conventional thermo-optic phase shifter using single mode waveguides has been experimentally demonstrated. The reported devices show minimal insertion loss penalty compared to generic devices and do not add any additional fabrication complexity. Such an approach could also be applied to higher speed devices, for example those employing free carrier effects.https://www.epj-conferences.org/articles/epjconf/pdf/2020/14/epjconf_eosam2020_01007.pdf
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Pant Bharat Zhang Weiwei Tran Denh Banakar Mehdi Du Han Yan Xingzhao Littlejohns Callum G. Reed Graham T. Thomson David J.
spellingShingle	Pant Bharat Zhang Weiwei Tran Denh Banakar Mehdi Du Han Yan Xingzhao Littlejohns Callum G. Reed Graham T. Thomson David J. Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device EPJ Web of Conferences
author_facet	Pant Bharat Zhang Weiwei Tran Denh Banakar Mehdi Du Han Yan Xingzhao Littlejohns Callum G. Reed Graham T. Thomson David J.
author_sort	Pant Bharat
title	Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
title_short	Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
title_full	Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
title_fullStr	Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
title_full_unstemmed	Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
title_sort	enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device
publisher	EDP Sciences
series	EPJ Web of Conferences
issn	2100-014X
publishDate	2020-01-01
description	We demonstrate a method for power reduction in thermo-optic based Mach-Zehnder interferometer (MZI) by using the multimode region of a 2x2 Multi-Mode-Interferometer (MMI) as the modulation region. The light is circulated through the same multimode region twice and therefore utilizes the already present change in temperature leading to additional phase change, and an increase in efficiency. Power saving of 29.6% compared to a conventional thermo-optic phase shifter using single mode waveguides has been experimentally demonstrated. The reported devices show minimal insertion loss penalty compared to generic devices and do not add any additional fabrication complexity. Such an approach could also be applied to higher speed devices, for example those employing free carrier effects.
url	https://www.epj-conferences.org/articles/epjconf/pdf/2020/14/epjconf_eosam2020_01007.pdf
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Enhanced efficiency thermo-optic phase-shifter by using multi-mode-interference device

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