title: Dual-beam interference from a lensed multicore fiber and its application to optical trapping.
abstract: A multicore all-fiber probe is demonstrated that has been fabricated using an electric arc fusion splicer. Interference of the fiber output when coherent light is coupled into two cores is investigated. The properties of the fringes created when the fiber is probing different media were found to be in general agreement with a beam propagation method simulation. Optical manipulation of microspheres near to the end of the probe is examined and the potential for controlled trapping explored. Polymer microspheres with diameters of 2 microns were formed into regular patterns due to the presence of the interference fringes.
authors.affiliation: Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, UK. ab461@hw.ac.uk
authors.forename: Ashleigh L
authors.initials: AL
authors.lastname: Barron
authors.forename: Ajoy K
authors.initials: AK
authors.lastname: Kar
authors.forename: Henry T
authors.initials: HT
authors.lastname: Bookey
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007909:Lenses; D052898:Optical Tweezers; D012031:Refractometry / Q000295:instrumentation*