title: Design and optimization of a reflection-based fiber-optic tweezers.
abstract: We present the numerical modelling of a novel all-fiber optical tweezers, whose efficacy has been recently demonstrated. The device, realized by properly shaping the end-face of a fiber bundle, exploits total internal reflection to enhance the trapping efficiency. In order to allow the optimization of the performance, the trapping efficiency is evaluated as a function of different geometrical parameters of the structure. Given the peculiar spatial and angular distribution of the optical field, a new figure of merit is adopted to assess tweezers performance.
authors.affiliation: CNISM and Electronic Department, University of Pavia, Pavia, Italy. francesca.bragheri@unipv.it
authors.forename: F
authors.initials: F
authors.lastname: Bragheri
authors.forename: P
authors.initials: P
authors.lastname: Minzioni
authors.forename: C
authors.initials: C
authors.lastname: Liberale
authors.forename: E
authors.initials: E
authors.lastname: Di Fabrizio
authors.forename: I
authors.initials: I
authors.lastname: Cristiani