title: Phase-transparent flexible waveband conversion of 43 Gb/s RZ-DQPSK signals using multiple-QPM-LN waveguides.
abstract: We report phase-transparent waveband conversion with polarization insensitivity based on second harmonic (SH) wave pumped difference frequency generation (DFG) using multiple-quasi-phase-matched LiNbO(3) (QPM-LN) waveguides. Flexible waveband conversion is demonstrated over the entire C-band using a tunable DFB-LD array (TLA) as a pump source for a multiple-QPM-LN waveguide. The penalty free waveband conversion of 43 Gb/s return-to-zero differential quadrature phase-shift-keying (RZ-DQPSK) waveband signals is successfully achieved.
authors: NTT Photonics Labs., NTT Corporation, 3-1, Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
authors: Hongbin
authors: H
authors: Song
authors: Osamu
authors: O
authors: Tadanaga
authors: Takeshi
authors: T
authors: Umeki
authors: Isao
authors: I
authors: Tomita
authors: Masaki
authors: M
authors: Asobe
authors: Shuto
authors: S
authors: Yamamoto
authors: Kunihiko
authors: K
authors: Mori
authors: Kazushige
authors: K
authors: Yonenaga