Single-mode tellurite glass holey fiber with extremely large mode area for infrared nonlinear applications

We report the fabrication of a large mode area tellurite holey fiber from an extruded preform, with a mode area of 3000 mu m(2). Robust single- mode guidance at 1.55 mu m was confirmed by both optical measurement and numerical simulation. The propagation loss was measured as 2.9dB/m at 1.55 mu m. A broad and flat supercontinuum from 0.9 to 2.5 mu m with 6mW output was obtained with a 9cm length of this fiber. (c) 2008 Optical Society of America.