@ARTICLE {8136,
author={A. Albuquerque and B. J. Puttnam and M. V. Drummond and A. Szabo and D. Mazroa and S. Shinada and N. Wada and R.N.  Nogueira},
doi={10.1364/OE.21.022063},
journal={Optics Express},
title={Phase-sensitive amplification in a single bi-directional PPLN waveguide},
year={2013},
month={September},
volume={21},
number={19},
pages={22063-22069 },
ISSN={1094-4087}
}