title: Enabling coherent superpositions of iso-frequency optical states in multimode fibers.
abstract: The ability to precisely and selectively excite superpositions of specific fiber eigenmodes allows one in principle to control the three dimensional field distribution along the length of a fiber. Here we demonstrate the dynamic synthesis and controlled transmission of vectorial eigenstates in a hollow core cylindrical photonic bandgap fiber, including a coherent superposition of two different angular momentum states. The results are verified using a modal decomposition algorithm that yields the unique complex superposition coefficients of the eigenstate space.
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02329-0407, USA.
authors.forename: Ofer
authors.initials: O
authors.lastname: Shapira
authors.forename: Ayman F
authors.initials: AF
authors.lastname: Abouraddy
authors.forename: Qichao
authors.initials: Q
authors.lastname: Hu
authors.forename: Dana
authors.initials: D
authors.lastname: Shemuly
authors.forename: John D
authors.initials: JD
authors.lastname: Joannopoulos
authors.forename: Yoel
authors.initials: Y
authors.lastname: Fink