Large-mode-area leaky optical fibre fabricated by MCVD
  A large mode area single-mode optical fibre based on leaky mode filtering was prepared by MCVD. The cladding structure discriminates the fundamental mode from the higher order ones. A preliminary version has 25-$\mu$m core diameter and 0.11 numerical aperture. A Gaussian-like mode with 22-$\mu$m MFD is observed after 3-m propagation, in agreement with modeling. 
Bernard Dussardier (LPMC), Stanislaw Trzesien (LPMC), Mich\`ele Ude   (LPMC), Vipul Rastogi, Ajeet Kumar, G\'erard Monnom (LPMC)
physics.optics