Estudo numérico-experimental da modulação acusto-ótica em uma fibra com dois núcleos
The coupling and the propagation properties between the modes in a double-core optical fiber are investigated by means of the 3D finite element method. The simulation of the power transfer between the cores along the fiber at a specific wavelength allows tuning an attenuation filter in the transmiss...
| Autor principal: | Javorsky, Isabela Barleta |
|---|---|
| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2018
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/3099 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
The coupling and the propagation properties between the modes in a double-core optical fiber are investigated by means of the 3D finite element method. The simulation of the power transfer between the cores along the fiber at a specific wavelength allows tuning an attenuation filter in the transmission spectrum. The dynamic tuning of the filter transmission spectrum is achieved by the application of flexural acoustic waves. A double-core fiber with similar geometrical and material properties compared to the simulation is acoustically excited and experimentally characterized. An acousto-optic modulator (9 kHz - 16 kHz) is assembled to tune the magnitude and the wavelength of the attenuation filter. The experimental results indicate agreement with simulations. The study points out to a new numerical methodology for the project and analysis of acousto-optic devices based on multicore fibers, which enables the application of these devices in attenuation filters, channel switches, sensors and couplers. |
|---|