4 May 2016 Strain tuneable whispering gallery mode resonators in the estimation of the elasto-optic parameters of soft materials
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Abstract
In this manuscript we present the fabrication and characterization of a novel, polymer whispering gallery modes (WGMs) spherical micro-resonator, formed around the waist of an optical fiber taper. Fiber taper with well attached spheroid works as a cord, fixed on two ends enabling strain application to the resonator body. Controllable elastic elongation of the encapsulated fiber taper causes a change in the shape of the spheroid, which modifies the diameter and directional refractive index of the cavity. These changes influence the wavelength position of the WGMs resonances with a linear blue shift up to 0.6 nm, with corresponding strains up to 700Μɛ. The strain induced WGMs shift with respect to resonator diameter and annealing process is presented and analyzed.
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Stavros Pissadakis, Stavros Pissadakis, Karolina Milenko, Karolina Milenko, Alina Aluculesei, Alina Aluculesei, George Fytas, George Fytas, } "Strain tuneable whispering gallery mode resonators in the estimation of the elasto-optic parameters of soft materials", Proc. SPIE 9899, Optical Sensing and Detection IV, 98991E (4 May 2016); doi: 10.1117/12.2229395; https://doi.org/10.1117/12.2229395
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