info:eu-repo/semantics/conferencePaper
Fabrication of Mach-Zehnder interferometers with conventional fiber optics in detection applications of micro-displacement and liquids.
Autor
JUAN CARLOS HERNANDEZ GARCIA
Institución
Resumen
In this paper we shows the results obtained to fabricate and implement Mach-Zehnder interferometers of
conventional fiber optic using Long Period Fiber Gratings (LPFG´s) which were developed by electric arc
technique. We obtains this type of interferometer when we fabricated two LPFG’s in series or in cascade with the
same characteristics such as number of discharges and the same period, placing them in cascade separated by a
distance which three times the length of the LPFG. The application which was given at interferometer fabricated
was as a liquids sensor, volume sensor of liquids and micro-displacement sensor. The sensors of liquids and liquids
volumes were placed in a container in which the interferometer is fixed so that results of measurements are only by
incorporating each of the liquid and not by some external movement. The sensed fluids were: water, alcohol and
solution (water with sugar). Final length of the interferometer is between 4 to 6 cm. We analyze the results obtained
to when a section the Mach-Zehnder interferometer is displaced in of the order of microns. The variations observed
in transmission spectra obtained from each of the sensors mentioned, show changes in the amplitude and the
attenuation peak of the interferometer was displaced.
Keywords: Long Period Fiber Gratings (LPFG´s), Mach-Zehnder interferometer, Optic sensors, Interferometer all
fiber optic.