“…Successful integrations onto the optical fibers of plasmonic nanostructures [ 36 , 37 ], photonic crystals [ 38 ], ring resonators [ 39 ], optomechanical microcavities [ 40 ], metallodielectric nanoarchitectures [ 41 , 42 , 43 ], and dielectric block surface-wave resonators [ 44 ] were recently reported. These first proofs of concept provide the basis for the development of multifunctional LOF platforms, such as plasmonic label-free optical fiber nanosensors [ 43 , 45 , 46 ], SERS nanoprobes [ 33 , 47 ], advanced photonic nanoresonators [ 39 , 44 ], ultrahigh-sensitivity acoustic transducers [ 48 ], optical fiber tweezers [ 49 , 50 ], and optical fiber metatips [ 51 ].…”