Geração de pulsos ultracurtos com acoplamento de modos híbrido em um laser de fibras ópticas mantenedoras de polarização

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dc.contributor.advisorSaito, Lúcia Akemi Miyazato
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/0915583034741895por
dc.contributor.authorAiub, Eduardo José
dc.creator.Latteshttp://lattes.cnpq.br/7625576730295013por
dc.date.accessioned2021-12-18T21:43:26Z
dc.date.available2021-12-18T21:43:26Z
dc.date.issued2020-08-17
dc.description.abstractA main motivation for this doctoral thesis was the recent use of lasers with ultrashort pulses being used in ultra-fast optical transmission systems (above 1 Tbit/s). For this, ultrashort pulse generation was demonstrated in two different lasers, one with SMF fibers for the ultrashort pulses generation using the hybrid mode-locking technique and the other with all components and fibers polarization maintaining (all-PM) for short pulses in Q-Switching Mode Locking regime. In the SMF laser, operating in hybrid mode-locking,the main innovation of the work was the use of two-dimensional materials as a saturable absorber at a repetition rate of 40 GHz, using two samples of CVD graphene and one of molybdenum disulfide. The results obtained were pulses with a duration of 655 and 620 fs with CVD graphene and 425 fs with MoS2. It is worth mentioning that, these results contribute to the state of the art as the first measurements of ultrashort pulses using 2D materials at a repetition rate of 40 GHz. In the all-PM laser, which was built to minimize laser instability and separate the possible presence of non-linear polarization rotation (NPR) existing in laser results with standard fibers,the main innovation was the use of CVD graphene deposited on D-shaped PM fiber and as a result, short pulses were obtained for the first time in Q-Switching regime. The challenge of this work was to build a laser capable of operating at a repetition rate of 40 GHz using two-dimensional materials as a saturable absorber and the construction of an all-PM laser for better stabilityeng
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superiorpor
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológicopor
dc.description.sponsorshipFundo Mackenzie de Pesquisapor
dc.formatapplication/pdf*
dc.identifier.citationAIUB, Eduardo José. Geração de pulsos ultracurtos com acoplamento de modos híbrido em um laser de fibras ópticas mantenedoras de polarização. 2020. 92 f. Tese (Engenharia Elétrica) - Universidade Presbiteriana Mackenzie, São Paulo. 2020por
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/28595
dc.keywordslaserseng
dc.keywordsoptical fiberseng
dc.keywords2D materialseng
dc.keywordsPM fiberseng
dc.keywordsultrashort pulseseng
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Abertopor
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectlaserspor
dc.subjectfibras ópticaspor
dc.subjectmateriais 2Dpor
dc.subjectfibras PMpor
dc.subjectpulsos ultracurtospor
dc.subject.cnpqCNPQ::ENGENHARIASpor
dc.titleGeração de pulsos ultracurtos com acoplamento de modos híbrido em um laser de fibras ópticas mantenedoras de polarizaçãopor
dc.typeTesepor
local.contributor.board1Matos, Christiano Jose Santiago de
local.contributor.board1Latteshttp://lattes.cnpq.br/6843256597783676por
local.contributor.board2Souza, Eunezio Antonio de
local.contributor.board2Latteshttp://lattes.cnpq.br/9756214150140645por
local.contributor.board3Wetter, Niklaus Ursus
local.contributor.board3Latteshttp://lattes.cnpq.br/8623798867256227por
local.contributor.board4Caro, Juan Diego Zapata
local.publisher.countryBrasilpor
local.publisher.departmentEscola de Engenharia Mackenzie (EE)por
local.publisher.initialsUPMpor
local.publisher.programEngenharia Elétricapor
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Engenharia Elétrica e Computação - Dissertações - EE Higienópolis