title: Fiber acousto-optic mode coupling between the higher-order modes with adjacent azimuthal numbers.
abstract: It is pointed out theoretically that fiber acousto-optic mode coupling can occur between the higher-order modes with adjacent azimuthal numbers. Selective fiber mode conversion from LP01 to LP11, and then to LP21 or LP02 is demonstrated experimentally in a few-mode fiber by using a method of cascaded acousto-optic mode coupling.
authors: Department of Electroinc Engineering, Tsinghua University, Beijing, China.
authors: Jianhui
authors: J
authors: Zhao
authors: Xiaoming
authors: X
authors: Liu