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Application of Multimode Laser Diodes in the Interrogation of Fiber Bragg Grating Sensors |
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| Authors: | L A Ferreira E V Diatzikis P J Moreira J L Santos F Farahi |
| Affiliation: | Unidade de Optoelectrónica e Sistemas Electrónicos, INESC Porto, Porto, Portugalf1;b Departamento de Física, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal;c Physics Department, University of North Carolina at Charlotte, Charlotte, North Carolina, 28223;d Unidade de Optoelectrónica e Sistemas Electrónicos, INESC Porto, Porto, Portugal;Departamento de Física, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007, Porto, Portugal, f2;Physics Department, University of North Carolina at Charlotte, Charlotte, North Carolina, 28223, , f3 |
| Abstract: | The interrogation of fiber Bragg grating sensors with multimode laser diodes is theoretically and experimentally analyzed using two different approaches: serrodyne and dithering techniques. It is also demonstrated that by using several laser modes it is possible to enhance the measurement range without compromising sensitivity. |
| Keywords: | fiber optic sensors fiber Bragg gratings multimode laser diodes serrodyne techniques dithering techniques |
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