Production of heavy metal optical fibers to be used in Faraday rotators

• Grant number: 18/19272-4
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: November 30, 2018
• End date: November 29, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Marcelo Nalin
• Grantee: Douglas Faza Franco
• Supervisor: Younes Messaddeq
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Institution abroad: Université Laval, Canada
• Associated to the scholarship: 16/16900-9 - Preparation of heavy metal oxide glasses fibers with optical and magneto-optical properties, BP.PD

Abstract

This project approaches the execution for an internship, in the Centre d'Optique, Photonique et Laser (COPL) at Laval University, in Canada. The project aims the preparation and characterization of core-cladding magneto-optical (MO) fibers based on heavy metal oxide glasses containing Tb3+ paramagnetic ion. In this project, we obtained new transparent and paramagnetic glasses, with completely amorphous structure, displaying a strong magnetic attraction to magnets, never before reported in the literature. The paramagnetic effect in glasses, until the present moment, is not very well understood, which make us believe that these materials will have innovative optical and MO applications. The precursor glasses are prepared by the conventional melt-quenching method, and subsequently, the core/cladding preforms will be obtained. The core-cladding MO fibers will be pulled in a draw tower. Thermal, morphologic and optical properties of MO fibers will be studied by Differential Scanning Calorimetry (DSC), Dynamic Mechanical Thermal Analysis (DMTA), Scanning electronic microscopy (SEM) and M-Lines technique. In order to conduct further investigation about the MO properties, measurements of Faraday Rotation (¸), and Verdet constant (V) will be studied for both precursor glasses and MO fibers. MO fibers will be analyzed by Optical Time Domain Reflectometry (OTDR) and properties, such as, the numerical aperture (NA) of the Optical fiber and the cut-off wavelength (»c) will be determined.

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRANCO, DOUGLAS F.; FERNANDES, ROGER G.; FELIX, JORLANDIO F.; MASTELARO, VALMOR R.; ECKERT, HELLMUT; AFONSO, CONRADO R. M.; MESSADDEQ, YOUNES; MESSADDEQ, SANDRA H.; MORENCY, STEEVE; NALIN, MARCELO. Fundamental studies of magneto-optical borogermanate glasses and derived optical fibers containing Tb3+. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 11, p. 312-327, MAR-APR 2021. (18/19272-4, 13/07793-6, 16/16900-9)

FRANCO, DOUGLAS F.; LEDEMI, YANNICK; CORRER, WAGNER; MORENCY, STEEVE; AFONSO, CONRADO R. M.; MESSADDEQ, SANDRA H.; MESSADDEQ, YOUNES; NALIN, MARCELO. Magneto-optical borogermanate glasses and fibers containing Tb3+. SCIENTIFIC REPORTS, v. 11, n. 1, MAY 10 2021. (16/16900-9, 13/07793-6, 18/19272-4)

CABRAL, THIAGO D.; FRANCO, DOUGLAS F.; FUJIWARA, ERIC; NALIN, MARCELO; CORDEIRO, CRISTIANO M. B.. Magnetic Field Fiber Specklegram Sensors Based on Tb³⁺-Doped Magneto-Optical Glasses With High Verdet Constants. IEEE SENSORS JOURNAL, v. 23, n. 7, p. 8-pg., 2023-04-01. (14/50632-6, 13/07793-6, 17/25666-2, 16/16900-9, 18/19272-4)

HENRIQUE, FRANCIELE R.; PELOSI, ANDRE G.; ALMEIDA, JULIANA M. P.; FRANCO, DOUGLAS F.; COCCA, LEANDRO H. Z.; H., J. L. CLABEL; NALIN, MARCELO; MASTELARO, V. R.; DE BONI, L.; MENDONCA, CLEBER R.. Nonlinear refraction in high terbium content borogermanate glass bulk and fiber. Optical Materials, v. 147, p. 6-pg., 2023-12-03. (18/11283-7, 18/19272-4, 15/22392-3, 21/11484-5, 13/07793-6)

DE BRITO, CAIQUE SERATI; RABAHI, CESAR RICARDO; TEODORO, MARCIO DALDIN; FRANCO, DOUGLAS F.; NALIN, MARCELO; BARCELOS, INGRID D.; GOBATO, YARA GALVAO. Strain engineering of quantum confinement in WSe2 on nano-roughness glass substrates. Applied Physics Letters, v. 121, n. 7, p. 7-pg., 2022-08-15. (19/23488-5, 16/16900-9, 19/14017-9, 18/19272-4, 13/07793-6)

LAMARCA, RAFAELA SILVA; FRANCO, DOUGLAS FAZA; NALIN, MARCELO; FEITOSA DE LIMA GOMES, PAULO CLAIRMONT; MESSADDEQ, YOUNES. Label-Free Ultrasensitive and Environment-Friendly Immunosensor Based on a Silica Optical Fiber for the Determination of Ciprofloxacin in Wastewater Samples. Analytical Chemistry, v. 92, n. 21, p. 14415-14422, NOV 3 2020. (13/07793-6, 16/16900-9, 18/19272-4, 18/22393-8)