@article{oai:oist.repo.nii.ac.jp:00000301,
 author = {Murphy, Rafino M. J. and Lei, Fuchuan and Ward, Jonathan M. and Yang, Yong and Chormaic, Síle Nic},
 issue = {12},
 journal = {Optics Express},
 month = {May},
 note = {A tunable, all-optical, coupling method is realised for a high-Q silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, induced thermal expansion of an asymmetric microsphere stem for laser powers up to 211 mW is observed and used to fine tune the microsphere-waveguide coupling. Microcavity displacements ranging from (0.61 ± 0.13) – (3.49 ± 0.13) μm and nanometer scale sensitivities varying from (2.81 ± 0.08) – (17.08 ± 0.76) nm/mW, with an apparent linear dependency of coupling distance on stem laser heating, are obtained. Using this method, the coupling is altered such that the different coupling regimes are achieved.},
 pages = {13101--13106},
 title = {All-optical nanopositioning of high-Q silica microspheres},
 volume = {25},
 year = {2017}
}