Artículo
High-speed and high-resolution interrogation of FBG sensors using wavelength-to-time mapping and Gaussian filters
Fernández, Manuel Pablo
; Bulus Rossini, Laureano Andrés
; Cruz, José L.; Andrés, Miguel V.; Costanzo Caso, Pablo Alejandro
Fecha de publicación:
12/2019
Editorial:
Optical Society of America
Revista:
Optics Express
ISSN:
1094-4087
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work we report a novel intensity-based technique for simultaneous high-speed and high-resolution interrogation of fiber Bragg grating (FBG) sensors. The method uses a couple of intensity Gaussian filters and the dispersion-induced wavelength-to-time mapping effect. The Bragg wavelength is retrieved by means of the amplitude comparison between the two filtered grating spectrums, which are mapped into a time-domain waveform. In this way, measurement distortions arising from residual power due to the grating sidelobes are completely avoided, and the wavelength measurement range is considerably extended with respect to the previously proposed schemes. We present the mathematical background for the interrogation of FBGs with an arbitrary bandwidth. In our proof-of-concept experiments, we achieved sensitivities of ∼20 pm with ultra-fast rates up to 264 MHz.
Palabras clave:
fiber bragg frating
,
photonic sensors
,
sensor monitoring
,
fiber optics
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Fernández, Manuel Pablo; Bulus Rossini, Laureano Andrés; Cruz, José L.; Andrés, Miguel V.; Costanzo Caso, Pablo Alejandro; High-speed and high-resolution interrogation of FBG sensors using wavelength-to-time mapping and Gaussian filters; Optical Society of America; Optics Express; 27; 25; 12-2019; 36815-36823
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