We present the fabrication of tellurite TeO 2 -ZnO-Na 2 O (TZN) microstructured optical fibers (MOFs) with a suspended core and the characterization of their optical properties. The fibers are designed to develop an infrared supercontinuum generation using a sub-nJ femtosecond pulsed laser at 1.56µm. By pumping a 20 cm long fiber we generate a supercontinuum (SC) spanning over 800 nm in the 1-2 µm wavelength range. For a MOF with a core size of 2.2 µm the zero dispersion wavelength (ZDW) is at 1.45 µm. The effective area of TZN MOF is 3.5 µm 2 and the nonlinear coefficient is calculated to be 437 W -1 km -1 .