title: Micro-channels machined in microstructured optical fibers by femtosecond laser.
abstract: Micro-channels were fabricated in hollow-core photonic bandgap fiber (HC-PBGF) and suspended-core holey fiber (SC-HF) by femtosecond Ti:sapphire laser irradiation. Gaseous access was demonstrated via these engineered ports to the core of HC-PBGF and the hollow cladding of SC-HF. Femtosecond laser micro-machining caused no additional transmission loss in HC-PBGFs. This allowed a novel gas cell to be produced, in which gaseous access was provided solely through two micro-channels. Acetylene diffusion was also confirmed through a micro-channel leading to a single cladding airhole in SC-HF. This further highlighted the fabrication technique's precision, selectivity, and potential for developing fiber-based micro-fluidic devices.
authors: Adriaan
authors: A
authors: van Brakel
authors: Christos
authors: C
authors: Grivas
authors: Marco N
authors: MN
authors: Petrovich
authors: David J
authors: DJ
authors: Richardson