(a) Schematic diagram of knot-type loop interferometer and (b) optical microscopic image of the knot-type loop made from etched multimode microfiber.
Transmission spectrum of (a) straight SMS fiber structure and SMS fiber (without etching the MMF) with a knot and (b) SMS NL interferometer.
(a) Shift in transmission spectrum in methanol and IPA. (b) Wavelength shift as a function of RI for different analytes with respect to air.
Wavelength shift as a function of RI for different concentration of glycerin.
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