Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC

In this work, we review the most important achievements of an INESC TEC long-period-grating-based fiber optic Michelson and Mach–Zehnder configuration modal interferometer with coherence addressing and heterodyne interrogation as a sensing structure for measuring environmental refractive index and t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Paulo Caldas, Gaspar Rego
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	long period grating optical fiber interferometric sensors low-coherence interferometric true pseudo-heterodyne technique Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/cecfa821764a44ec9b6f34154f7b9d5e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cecfa821764a44ec9b6f34154f7b9d5e
record_format	dspace
spelling	oai:doaj.org-article:cecfa821764a44ec9b6f34154f7b9d5e2021-11-11T19:19:24ZOptical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC10.3390/s212174001424-8220https://doaj.org/article/cecfa821764a44ec9b6f34154f7b9d5e2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7400https://doaj.org/toc/1424-8220In this work, we review the most important achievements of an INESC TEC long-period-grating-based fiber optic Michelson and Mach–Zehnder configuration modal interferometer with coherence addressing and heterodyne interrogation as a sensing structure for measuring environmental refractive index and temperature. The theory for Long Period Grating (LPG) interferometers and coherence addressing and heterodyne interrogation is presented. To increase the sensitivity to external refractive index and temperature, several LPG interferometers parameters are studied, including order of cladding mode, a reduction of the fiber diameter, different type of fiber, cavity length and the antisymmetric nature of cladding modes.Paulo CaldasGaspar RegoMDPI AGarticlelong period gratingoptical fiber interferometric sensorslow-coherence interferometrictrue pseudo-heterodyne techniqueChemical technologyTP1-1185ENSensors, Vol 21, Iss 7400, p 7400 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	long period grating optical fiber interferometric sensors low-coherence interferometric true pseudo-heterodyne technique Chemical technology TP1-1185
spellingShingle	long period grating optical fiber interferometric sensors low-coherence interferometric true pseudo-heterodyne technique Chemical technology TP1-1185 Paulo Caldas Gaspar Rego Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
description	In this work, we review the most important achievements of an INESC TEC long-period-grating-based fiber optic Michelson and Mach–Zehnder configuration modal interferometer with coherence addressing and heterodyne interrogation as a sensing structure for measuring environmental refractive index and temperature. The theory for Long Period Grating (LPG) interferometers and coherence addressing and heterodyne interrogation is presented. To increase the sensitivity to external refractive index and temperature, several LPG interferometers parameters are studied, including order of cladding mode, a reduction of the fiber diameter, different type of fiber, cavity length and the antisymmetric nature of cladding modes.
format	article
author	Paulo Caldas Gaspar Rego
author_facet	Paulo Caldas Gaspar Rego
author_sort	Paulo Caldas
title	Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
title_short	Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
title_full	Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
title_fullStr	Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
title_full_unstemmed	Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC
title_sort	optical fiber interferometers based on arc-induced long period gratings at inesc tec
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cecfa821764a44ec9b6f34154f7b9d5e
work_keys_str_mv	AT paulocaldas opticalfiberinterferometersbasedonarcinducedlongperiodgratingsatinesctec AT gasparrego opticalfiberinterferometersbasedonarcinducedlongperiodgratingsatinesctec
_version_	1718431554763489280

Optical Fiber Interferometers Based on Arc-Induced Long Period Gratings at INESC TEC

Ejemplares similares