2R regenerator based on a 2-m-long highly nonlinear bismuth oxide fiber Parmigiani, Francesca ; Asimakis, Symeon ; Sugimoto, Naoki ; Koizumi, Fumihito ; Petropoulos, Periklis ; Richardson, David J. Abstract Publication: Optics Express Pub Date: June 2006 DOI: 10.1364/OE.14.005038 Bibcode: 2006OExpr..14.5038P