Nonlinear characterization on mid-infrared fluorotellurite glass fiber

Abstract

By physical and chemical dehydration technique to remove OH group from raw materials and via built-in casting method to make glass fiber preform, mid-infrared fluorotellurite glass fibers with low loss of 3.61dB/m at 1550nm were fabricated recently. With the addition of fluoride components, fluorotellurite glass fiber cane presents a ‘water-free’ state with a broadband transparency in the range of 0.38–4.2µm. By the continuous-wave self-phase modulation method, the nonlinear refractive index n2 and the effective nonlinear parameter γ of the made fluorotellurite glass fiber were estimated to be 1.4×10−18m2/W and 20.9/W/km at 1550nm, respectively. © 2013 Elsevier B.V. All rights reserved.