Abstract

With the continuous development of high-speed wavelength division multiplexing (WDM) system, the transmission speed of light signals in optical fiber channels dramatically increases, which has caused the fiber nonlinear effect more and more prominent. As the previous methods to resist the influence were to some extent reliant on extra devices, to optimize the design of connection relationships in hybrid optical fiber networks might be a promising way to further improve the resistance ability of fiber nonlinear effect. To prove this, a simple WDM system including only one transmission path formed by two different types of optical fiber cables, i.e., G.652 and G.655, is established, based on which comparative simulations are performed to analyze the end-to-end nonlinear effect when the two types of optical fiber cables are connected in different order. Simulation results indicate that different connection orders of G.652 and G.655 cables correspond to different optical signal to noise ratio (OSNR) at the receiver side, demonstrating the difference in nonlinear effect accumulation in the end-to-end transmission and the importance on fiber link design in the WDM networks.

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