For the application field of optofluidics and liquid-based spectroscopy, the properties of hollow-core microgap waveguides are investigated. A good agreement of numerical simulations and experiments is shown.
J. Kim, et al. 3D-nanoprinted on-chip antiresonant waveguide with hollow core and microgaps for integrated optofluidic spectroscopy. Opt. Express, 31, 2833 (2023).
DOI: 10.1364/OE.475794