title: Tunable mode rotator for space-division multiplexing based on a few mode-polarization maintaining fiber.
abstract: In this paper, a fiber-based tunable mode rotator is proposed and demonstrated by using the few mode-polarization maintaining fiber (FM-PMF). The mode birefringence in the FM-PMF causes phase difference between two orthogonal degenerate modes. With rotating the FM-PMF segment and getting a variation of aligning angle between the injected LP11(LP21) mode axis and FM-PMF axis, another intended LP11(LP21) mode with a certain orientation can be controllably generated at the FM-PMF output.
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Hong
authors.forename: Xinglin
authors.initials: X
authors.lastname: Zeng
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Qi
authors.initials: Q
authors.lastname: Mo
authors.forename: Yongjie
authors.initials: Y
authors.lastname: Tian
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Wu