Caracterização das propriedades acústicas de um modulador acusto-óptico de fibra de cristal fotônico
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 pi...
| Autor principal: | Silva, Ricardo Ezequiel da |
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| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2014
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/901 |
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| Resumo: |
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. |
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