Lavdas, S;    Zhao, S;    Panoiu, NC;    Driscoll, JB;    Grote, RR;    Osgood, RM;      (2014)    Wavelength conversion and parametric amplification of optical pulses via quasi-phase-matched four-wave mixing in long-period Bragg silicon waveguides.                   Optics Letters , 39  (13)   4017 - 4020.    10.1364/OL.39.004017 <https://doi.org/10.1364/OL.39.004017>.       Green open access