Photonic Crystal Fibers

This report results from a contract tasking Crystal Fibre AS as follows Crystal Fibre will conduct research and development of large mode area, dual clad multi-core Yb-doped photonic crystal fiber. The fiber may be polarization maintaining PM. Nominal fiber designs will include six and seven core fibers with nominal specifications of 400 micron 0.6 NA pump core, and 30-35 micron signal cores. Crystal Fibre shall fabricate 1 preform worth but not less than 50 meters of passive and active versions of each fiber designed under this task. Crystal Fibre shall provide characteristics of the fiber fabricated to include core and cladding diameters, core and cladding numerical apertures, Yb doping concentration, and pump absorption at 976nm. Passive multicore fiber versions without airclad will be available approximately 1-12 month after fiber design agreement. Active multicore airclad fiber versions will be available approximately 3 months after fiber design agreement. Within this project we will deliver a passive and active version of multicore fiber iteration 1 and a passive version of multicore fiber iteration 2.