title: Inter-modal four-wave mixing study in a two-mode fiber.
abstract: We demonstrate efficient four-wave mixing among different spatial modes in a 1-km long two-mode fiber at telecommunication wavelengths. Two pumps excite the LP01and LP11modes, respectively, while the probe signal excites the LP01mode, and the phase conjugation (PC) and Bragg scattering (BS) idlers are generated in the LP11mode. For these processes we experimentally characterize their phase matching efficiency and bandwidth and find that they depend critically on the wavelength separation of the two pumps, in good agreement with the numerical study we carried out. We also confirm experimentally that BS has a larger bandwidth than PC for the optimum choice of the pump wavelength separation.
authors.forename: S M M
authors.initials: SM
authors.lastname: Friis
authors.forename: I
authors.initials: I
authors.lastname: Begleris
authors.forename: Y
authors.initials: Y
authors.lastname: Jung
authors.forename: K
authors.initials: K
authors.lastname: Rottwitt
authors.forename: P
authors.initials: P
authors.lastname: Petropoulos
authors.forename: D J
authors.initials: DJ
authors.lastname: Richardson
authors.forename: P
authors.initials: P
authors.lastname: Horak
authors.forename: F
authors.initials: F
authors.lastname: Parmigiani