Of nonlinear optical IFWM impairments in optical fiber by modeling 40 Gbs transimpedance amplifier

Abstract EN

A suppression of nonlinear optical Intra-Channel Four Wave Mixing (IFWM) induced phase and amplitude noise in optical fiber is reported by simulation.

A 40 Gb /s transimpedance amplifier (TIA) circuit was investigated for this purpose.

Circuit components were modeled under thermal conditions of 30ºC.

Using 81 kΩ nonlinear feedback resistor RTIA, an optimal Minimum Noise Figure (MNF) of 1.758 dB was achieved.

A 1.760 dB of MNF is reported when RTIA value changes to 80 kΩ.

However, when an IFWM-induced phase and amplitude combined noise is applied at the TIA input with a magnitude of 19.081 dB, it was effectively suppressed under the influence of TIA input impedance Zin of 19914 Ω which lead to IFWM combined noise of 14.55 dB in a decreasing pattern at TIA output.

An |S21| simulated measurement showed a gain of 10.15 dB.