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|Title:||Combined microfiber knot resonator and focused ion beam-milled Mach-Zehnder interferometer for refractive index measurement|
|Authors:||André Delgado Gomes|
|Abstract:||A Mach-Zehnder interferometer was created from a cavity milled in the taper region next to a microfiber knot resonator. A focused ion beam was used to mill the cavity with 47.8 µm in length. The microfiber knot resonator was created from an 11 µm diameter taper, produced using a filament fusion splicer. After milling the cavity, the microfiber knot resonator spectrum is still visible. The final response of the presented sensor is a microfiber knot resonator spectrum modulated by the Mach-Zehnder interference spectrum. A preliminary result of -8935 ± 108 nm/RIU was obtained for the refractive index sensitivity of the cavity component in a refractive index range of n = 1.333 to 1.341. Simultaneous measurement of refractive index and temperature using this combined structure is a future goal. © 2017 SPIE.|
|Appears in Collections:||CAP - Articles in International Conferences|
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