Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point

We propose a highly sensitive temperature sensor based on long period grating inscribed high index coated ridge waveguide in which the unique feature of mode transition (MT) phenomenon combined with the high thermo optic coefficient (TOC) polymer ambient elevates the differential thermal dependence...

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Autores principales:	Nabarun Saha, Arun Kumar, Anurag Sharma
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Integrated photonics Ridge waveguide Long period grating Temperature sensor Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/c0a7a69c4ab54ac28eda3665bef37d47
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spelling	oai:doaj.org-article:c0a7a69c4ab54ac28eda3665bef37d472021-11-26T04:42:23ZMode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point2666-950110.1016/j.rio.2021.100195https://doaj.org/article/c0a7a69c4ab54ac28eda3665bef37d472021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666950121001401https://doaj.org/toc/2666-9501We propose a highly sensitive temperature sensor based on long period grating inscribed high index coated ridge waveguide in which the unique feature of mode transition (MT) phenomenon combined with the high thermo optic coefficient (TOC) polymer ambient elevates the differential thermal dependence between the participating modes. Using the dual resonance behavior, the temperature sensitivity is found to be ∼100 nm/°C near the dispersion turning point (DTP) at around room temperature with good tolerances with respect to waveguide’s width and grating period. A judicious grating design has also been formulated to operate the proposed structure near the DTP for temperatures other than room temperature including human body temperature, making the device an excellent choice for different bio and chemical applications. A comparative study of temperature sensitivity near the DTP with a conventional ridge waveguide is used to show the importance of the MT in obtaining high sensitivity near the turning point.Nabarun SahaArun KumarAnurag SharmaElsevierarticleIntegrated photonicsRidge waveguideLong period gratingTemperature sensorOptics. LightQC350-467ENResults in Optics, Vol 5, Iss , Pp 100195- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Integrated photonics Ridge waveguide Long period grating Temperature sensor Optics. Light QC350-467
spellingShingle	Integrated photonics Ridge waveguide Long period grating Temperature sensor Optics. Light QC350-467 Nabarun Saha Arun Kumar Anurag Sharma Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
description	We propose a highly sensitive temperature sensor based on long period grating inscribed high index coated ridge waveguide in which the unique feature of mode transition (MT) phenomenon combined with the high thermo optic coefficient (TOC) polymer ambient elevates the differential thermal dependence between the participating modes. Using the dual resonance behavior, the temperature sensitivity is found to be ∼100 nm/°C near the dispersion turning point (DTP) at around room temperature with good tolerances with respect to waveguide’s width and grating period. A judicious grating design has also been formulated to operate the proposed structure near the DTP for temperatures other than room temperature including human body temperature, making the device an excellent choice for different bio and chemical applications. A comparative study of temperature sensitivity near the DTP with a conventional ridge waveguide is used to show the importance of the MT in obtaining high sensitivity near the turning point.
format	article
author	Nabarun Saha Arun Kumar Anurag Sharma
author_facet	Nabarun Saha Arun Kumar Anurag Sharma
author_sort	Nabarun Saha
title	Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
title_short	Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
title_full	Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
title_fullStr	Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
title_full_unstemmed	Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
title_sort	mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c0a7a69c4ab54ac28eda3665bef37d47
work_keys_str_mv	AT nabarunsaha modetransitioninducedenhancedtemperaturesensitivityinlongperiodwaveguidegratingsneardispersionturningpoint AT arunkumar modetransitioninducedenhancedtemperaturesensitivityinlongperiodwaveguidegratingsneardispersionturningpoint AT anuragsharma modetransitioninducedenhancedtemperaturesensitivityinlongperiodwaveguidegratingsneardispersionturningpoint
_version_	1718409806152204288

Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point

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