Abstract
We report high Brillouin frequency shifts of in a 60 cm -Poly(methyl methacrylate) (-PMMA) hybrid microtaper with 2 μm core and 100 μm PMMA cladding diameters under a transverse load. Through finite element analysis of stimulated Brillouin scattering under the influence of contact stress from the loading fixture, such shifts are in accordance with a numerical value of . Further numerical analysis shows that uncertainties in the Brillouin frequency shift are the result of birefringence that is 27 times stronger than what is found in standard silica fibers.
© 2019 Optical Society of America
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