Design of Dense Wavelength Division Multiplexing System Using DQPSK Modulation Format

Abstract

In this chapter, a Dense Wavelength Division Multiplexed (DWDM) system is presented for a transmission distance of 1000 km. A maximum data rate of 160 Gbps is achieved using Differential Quaternary Phase-Shift Keying (DQPSK) modulation format with direct detection at the receiver. The fiber attenuation and dispersion are compensated using Erbium-Doped Fiber Amplifier (EDFA) and Dispersion Compensating Fiber (DCF) respectively. The 16 × 10 Gbps system is evaluated in terms of Bit Error Rate (BER ≤ 10 −9 ) and Quality factor (Q-factor ≥ 6) based on the simulation platform. The proposed design shall find application in Passive Optical Network (PON) architecture and Optical Add-Drop Multiplexing (OADM) transmission system.