Nonlinear Applications of Compact Bismuth Erbium Doped Fiber Amplifier

Abstract: A CW Multi & dual-wavelength laser comb is demonstrated using a nonlinear effect in a 215cm long highly nonlinear Bismuth-based Erbium-doped fiber (Bi-EDF). This report is based on methods for determination of nonlinear properties of Bi-EDF assisted by Four-wave mixing (FWM) effect. The laser generates more than 10 lines of optical comb with a line spacing of approximately 0.41nm at 1615.5nm region using 146mW of 1480nm pump power for determination of dispersion. We also estimated the nonlinear parameter
, nonlinear index coefficient n2 and n2/Aeff in 1612 nm input signal as 59.16 (W-1km-1), 4.40×10-19 (m2/W) and 1.51×10-8 (W-1) for Bi-EDF, respectively. Empirical comparison shows that the values found by theoretical model are both in good agreement and much higher than that of silica. Keywords: Nonlinear parameter, , mixing, Efficiency, Multi-wavelength.