Theoretical and experimental results are presented to show that the complex effective index of the modes of optical fibers coated with non-uniform metal coatings of gold, silver, copper, or palladium, with thicknesses between 0 and 20 nm, acquire a greatly enhanced sensitivity to various forms of perturbations. Thickness changes of less than 1 nm can be measured as well as the binding of record low concentrations of chemical and biochemical species.

Additional Metadata
Keywords Fiber gratings, Metal nanoparticles, Optical fiber sensors, Surface plasmons
Persistent URL dx.doi.org/10.3390/s18051518
Journal Sensors
Citation
Albert, J, Liu, F. (Fu), & Marquez-Cruz, V. (Violeta). (2018). Hypersensitivity and applications of cladding modes of optical fibers coated with nanoscale metal layers. Sensors, 18(5). doi:10.3390/s18051518