title: Fiber-optic beam shaper based on multimode interference.
abstract: A new method of fiber-optic based beam shaping is investigated both numerically and experimentally. A cylindrically symmetric method of lines (MoLs) is developed to simulate the device. The device is fabricated by fusion splicing a predetermined length of multimode fiber (MMF) to a single-mode fiber. The multimode interference (MMI) effects create ring-shaped field profiles at certain positions inside the MMF. The shaped beam can be used in medical applications requiring particular irradiation patterns.
authors.affiliation: Department of Physics and Optical Science, University of North Carolina at Charlotte 28223, USA.
authors.forename: Yiğit O
authors.initials: YO
authors.lastname: Yilmaz
authors.forename: Alok
authors.initials: A
authors.lastname: Mehta
authors.forename: Waleed S
authors.initials: WS
authors.lastname: Mohammed
authors.forename: Eric G
authors.initials: EG
authors.lastname: Johnson