title: Adaptive mode control of a few-mode fiber by real-time mode decomposition.
abstract: A novel approach to adaptively control the beam profile in a few-mode fiber is experimentally demonstrated. We stress the fiber through an electric-controlled polarization controller, whose driven voltage depends on the current and target modal content difference obtained with the real-time mode decomposition. We have achieved selective excitations of LP01 and LP11 modes, as well as significant improvement of the beam quality factor, which may play crucial roles for high-power fiber lasers, fiber based telecommunication systems and other fundamental researches and applications.
authors.forename: Liangjin
authors.initials: L
authors.lastname: Huang
authors.forename: Jinyong
authors.initials: J
authors.lastname: Leng
authors.forename: Pu
authors.initials: P
authors.lastname: Zhou
authors.forename: Shaofeng
authors.initials: S
authors.lastname: Guo
authors.forename: Haibin
authors.initials: H
authors.lastname: Lü
authors.forename: Xiang'ai
authors.initials: X
authors.lastname: Cheng