title: Widely tunable 3.4 microm band difference frequency generation using apodized chi(2) grating.
abstract: We achieved apodization in a quasi-phase-matched wavelength converter. The new design yields a large bandwidth and a flat phase-matching response with a high conversion efficiency. Using the method, we demonstrate widely tunable 3.4 microm band difference frequency generation in a LiNbO3 ridge waveguide.
authors.affiliation: NTT Photonics Laboratories, NTT Corporation, Kanagawa, Japan. umeki@aecl.ntt.co.jp
authors.forename: T
authors.initials: T
authors.lastname: Umeki
authors.forename: M
authors.initials: M
authors.lastname: Asobe
authors.forename: Y
authors.initials: Y
authors.lastname: Nishida
authors.forename: O
authors.initials: O
authors.lastname: Tadanaga
authors.forename: K
authors.initials: K
authors.lastname: Magari
authors.forename: T
authors.initials: T
authors.lastname: Yanagawa
authors.forename: H
authors.initials: H
authors.lastname: Suzuki