A novel twin-core fiber connector has been made by two side-polished fibers. By using side polishing technique, we present a connector based on the twin-core fiber (TCF) and two D-shaped single-core fibers. After simple alignment and splicing, all fiber miniaturizing connector can be obtained. Two cores can operate independently and are non-interfering. The coupling loss of this connector is low and the fabrication technologies are mature. The connector device could be used for sensors or particle trapping.
We report an in-fiber integrated chemiluminiscence sensor based on a kind of hollow optical fiber with a suspended
inner core. The path of mircofluid is realized by etching microholes for inlets and outlets on the surface of the optical
fiber without damaging the inner core and then constructing a melted point beside the microhole of the outlet. By
injecting samples into the fiber, the liquids can be fully mixed and form steady microflows. Simultaneously, the photon
emitted from the chemiluminiscence reaction is efficiently coupled into the core and can be detected at the end of the