{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/6318"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/6318","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Estudo de sensor de campo magnético baseado em fibra óptica com rede de Bragg e Filme Fino de Terfenol-D","abstract":"Magnetic field measurement has many application from military area, as detection of airplanes, ships and tanks, to electrical generator and transmission system as electric current sensing. Sensors based on optical fiber with thin film technology become great options to this application, once they are electromagnetic imunes, small dimensions and intrinsically electrically insulated. The goal of this work is the production of a magnetic field sensor based on an optical fiber with a Bragg grating inscribed and coated with a Terfenol-D magnetostrictive thin film. When an external magnetic field is applied, the magnetostrictive thin film presents a strain that will be transmitted to the optical fiber. The strain will be detected by the displacement of the wavelength reflected by the Bragg grating. The developed sensor presents a sensitivity of 0.075 pm/mT with operational range of 50 to 150 mT for a field perpendicular to the fiber optical longitudinal axis. In addition to the sensor characterization, a thorough characterization of the thin film was performed, including chemical composition, structure and magneto-optical properties. The final system response was analysed in view of these informations. We also verified the influence of the characterization setup in the sensor response.","abstract_html":"Magnetic field measurement has many application from military area, as detection of airplanes, ships and tanks, to electrical generator and transmission system as electric current sensing. Sensors based on optical fiber with thin film technology become great options to this application, once they are electromagnetic imunes, small dimensions and intrinsically electrically insulated. The goal of this work is the production of a magnetic field sensor based on an optical fiber with a Bragg grating inscribed and coated with a Terfenol-D magnetostrictive thin film. When an external magnetic field is applied, the magnetostrictive thin film presents a strain that will be transmitted to the optical fiber. The strain will be detected by the displacement of the wavelength reflected by the Bragg grating. The developed sensor presents a sensitivity of 0.075 pm/mT with operational range of 50 to 150 mT for a field perpendicular to the fiber optical longitudinal axis. In addition to the sensor characterization, a thorough characterization of the thin film was performed, including chemical composition, structure and magneto-optical properties. The final system response was analysed in view of these informations. We also verified the influence of the characterization setup in the sensor response.","abstract_has_math":false,"creators":["Moraes, Isabelle Gomes de"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Werneck, Marcelo Martins"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-07","date_published":"2017-07","updated_at":"2026-07-24T01:16:21Z","subjects":["Engenharia elétrica","Rede de Brag","Campo magnético"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/6318","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Werneck, Marcelo Martins"]},{"key":"dc:creator","label":"Author","values":["Moraes, Isabelle Gomes de"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-01-31T15:05:26Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:43Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-07"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engenharia elétrica","Rede de Brag","Campo magnético"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/6318"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Magnetic field measurement has many application from military area, as detection of airplanes, ships and tanks, to electrical generator and transmission system as electric current sensing. Sensors based on optical fiber with thin film technology become great options to this application, once they are electromagnetic imunes, small dimensions and intrinsically electrically insulated. The goal of this work is the production of a magnetic field sensor based on an optical fiber with a Bragg grating inscribed and coated with a Terfenol-D magnetostrictive thin film. When an external magnetic field is applied, the magnetostrictive thin film presents a strain that will be transmitted to the optical fiber. The strain will be detected by the displacement of the wavelength reflected by the Bragg grating. The developed sensor presents a sensitivity of 0.075 pm/mT with operational range of 50 to 150 mT for a field perpendicular to the fiber optical longitudinal axis. In addition to the sensor characterization, a thorough characterization of the thin film was performed, including chemical composition, structure and magneto-optical properties. The final system response was analysed in view of these informations. We also verified the influence of the characterization setup in the sensor response."]},{"key":"dc:title","label":"Title","values":["Estudo de sensor de campo magnético baseado em fibra óptica com rede de Bragg e Filme Fino de Terfenol-D"]}]}],"canonical_facts":{"dc:contributor.advisor":["Werneck, Marcelo Martins"],"dc:creator":["Moraes, Isabelle Gomes de"],"dc:date.accessioned":["2019-01-31T15:05:26Z"],"dc:date.available":["2026-05-16T03:03:43Z"],"dc:date.issued":["2017-07"],"dc:description.abstract":["Magnetic field measurement has many application from military area, as detection of airplanes, ships and tanks, to electrical generator and transmission system as electric current sensing. Sensors based on optical fiber with thin film technology become great options to this application, once they are electromagnetic imunes, small dimensions and intrinsically electrically insulated. The goal of this work is the production of a magnetic field sensor based on an optical fiber with a Bragg grating inscribed and coated with a Terfenol-D magnetostrictive thin film. When an external magnetic field is applied, the magnetostrictive thin film presents a strain that will be transmitted to the optical fiber. The strain will be detected by the displacement of the wavelength reflected by the Bragg grating. The developed sensor presents a sensitivity of 0.075 pm/mT with operational range of 50 to 150 mT for a field perpendicular to the fiber optical longitudinal axis. In addition to the sensor characterization, a thorough characterization of the thin film was performed, including chemical composition, structure and magneto-optical properties. The final system response was analysed in view of these informations. We also verified the influence of the characterization setup in the sensor response."],"dc:identifier.uri":["http://hdl.handle.net/11422/6318"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Engenharia elétrica","Rede de Brag","Campo magnético"],"dc:title":["Estudo de sensor de campo magnético baseado em fibra óptica com rede de Bragg e Filme Fino de Terfenol-D"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:21Z"}