Caracterização das propriedades acústicas de um modulador acusto-óptico de fibra de cristal fotônico

• Ano de defesa: 2011
• Autor(a) principal: Silva, Ricardo Ezequiel da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial
• Palavras-chave em Português: Moduladores (Eletrônica); Ondas sonoras; Engenharia elétrica; Modulators (Electronics); Sound-waves; Electric engineering
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/901

This work describes the characterization of flexural acoustic waves propagating in Photonic Crystal Fibers with inscribed Bragg gratings, which are excited by means of an acoustic-optic modulator. An interferometric optical system was developed in order to measure the flexural deformations of the piezoelectric transducer and of the fiber. Measurements of the excitation frequency and period allowed the phase velocity estimation of the flexural acoustic waves. The transducer resonances are checked up to an excitation frequency of 1 MHz. Measured values obtained in standard single mode fibers are also presented and the estimated phase velocities between both types of fibers are compared.