The polarized evanescent fields of optical fiber cladding modes resonantly coupled from a single mode fiber core are used to probe materials and events on the fiber surface, including plasmonic nanoscale metal coatings.
Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, BGPPM 2018
Department of Electronics

Albert, J. (2018). Tilted fiber bragg gratings with plasmonic and near zero permittivity coatings for biochemical sensing. In Optics InfoBase Conference Papers. doi:10.1364/BGPPM.2018.BTu4A.1