Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11023482 | Optik - International Journal for Light and Electron Optics | 2019 | 9 Pages |
Abstract
This paper investigates the SBS tolerance of two reduced complexity Carrier Suppressed Return to Zero- Differential Quadrature Phase Shift Keying (CSRZ-DQPSK) transmitter configurations and comparison with conventional 3 MZM scheme is reported. One scheme utilizes a single DD-MZM (Dual Drive Mach Zehnder Modulator) and a MZM (Mach Zehnder Modulator). Another configuration uses a single DD-MZM (Dual Drive Mach Zehnder Modulator). The link performance is evaluated for 10 Gbps data rate in a 50 Km single mode fiber link. From the simulation results, it is observed that two and one MZM based configurations provide 3âdB improvement in SBS threshold compared to the standard three MZM based implementation. Also, the performance of 2 MZM is slightly better than the single MZM configuration. As the input power is increased beyond SBS threshold, the roll off of Q- Factor is found to be 0.3/dBm for 3 MZM scheme where it is 0.05/dBm and 0.1/dBm for the 2 MZM and 1 MZM schemes. The BER performance is better at higher power levels, for the one and two MZM cases.
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Authors
Rimmya Chitravelu, Ganesh Madhan Muthu,