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We present an approach to translate and reconfigure SNAP microresonators (SMRs) introduced along a thin-walled hollow silica microcapillary fiber (MCF). First, we demonstrate formation and translation of a train of multiple SMRs induced by a periodic sequence of droplets inside an MCF controlled by air pressure. Next, we reconfigure a permanent SMR introduced at the MCF by a sequence of droplet-induced SMRs controllably translated along the MCF. We believe that the developed approach can become a promising technology for fabrication of reconfigurable low-loss resonant photonic microdevices for optical signal processing applications.
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Gabriella I. Gardosi, Misha Sumetsky, "Translation and reconfiguration of SNAP microresonators using optofluidics," Proc. SPIE PC12407, Laser Resonators, Microresonators, and Beam Control XXV, PC1240709 (17 March 2023); https://doi.org/10.1117/12.2649393