Open AccessPhase-transparent flexible waveband conversion of 43 Gb/s RZ-DQPSK signals using multiple-QPM-LN waveguides
Author(s) -
Hongbin Song,
O. Tadanaga,
Takeshi Umeki,
Isao Tomita,
Masaki Asobe,
Shuto Yamamoto,
K. Möri,
K. Yonenaga
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.015332
Subject(s) - optics , phase shift keying , lithium niobate , polarization (electrochemistry) , keying , materials science , energy conversion efficiency , phase (matter) , optoelectronics , physics , bit error rate , telecommunications , computer science , channel (broadcasting) , chemistry , quantum mechanics
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.