A new type of microstructured optical fiber, with a transverse slot running along its length, has been fabricated from
polymethylmethacrylate. The slot exposes the fiber core over long lengths, allowing for materials to be directly
introduced into the vicinity of the evanescent waves of the core modes. The use of this fiber as an evanescent wave
chemical sensor has been demonstrated.
Surface enhanced resonant Raman scattering (SERRS) signals are enhanced by confining the scattering to the core of a hollow core microstructured optical fiber. An analyte solution of rhodamine 6G adsorbed on colloidal silver was used. This solution filled both the core and cladding of the fiber. It was found that SERRS signals could be collected from the solution in the fiber beyond the detection limit of an equivalent free space system.
Microstructured Polymer Optical Fibers (MPOF) were first made in 2001, and subsequent development has aimed at exploiting the material and design opportunities they present. Most effort has been focused on developing approaches for high bandwidth MPOF, and investigating the properties of multimode microstructured fibers. We also consider new applications in endoscopy and photonic interconnects, as well as the use of organic dopants in MPOF.