info:eu-repo/semantics/article
Microstructured Optical Fiber Coated with Thin Films for Gas and Chemical Sensing
Autor
ULADZIMIR MINKOVICH
DAVID MONZON HERNANDEZ
AGUSTIN JOEL VILLATORO BERNARDO
Institución
Resumen
We propose the use of tapered microstructured fibers with collapsed air-holes coated with thin layers for gas sensing. The collapsing of the holes allows having access to the evanescent fields which can be absorbed or attenuated with gas-permeable thin films. On the other hand, a section of the holey fiber is transformed into a solid multimode fiber. The beating between the multiple modes of the latter makes the transmission spectra of the device to exhibit an oscillatory pattern. This evanescent-fields-plus-modal-interferometer structure may offer interesting properties for gas and chemical sensing. As an example we demonstrate a hydrogen sensor.