Generation of Low Divergent High Power Supercontinuum Through a Large   Mode Area Photonic Bandgap Fiber
  We report generation of broadband low divergent supercontinuum over the entire wavelength window of 1.5 to 3.5 {\mu}m from a 2.25 meter long effective single moded photonic bandgap fiber with mode area of 1100 {\mu}m2. 
S. Ghosh, T. Naresh, R. K. Varshney, and B. P. Pal
physics.optics