Analysis and Modelling of DD-DPMZM to Investigate Fundamental to Intermodulation Distortion Ratio (FIMDR) Against Different Fiber Impairments for the Next Generation Networks
Balram Tamrakar, Krishna Singh and Parvin Kumar
This research article representing the analysis and modelling of MZM (Mach Zehnder Modulator), and Dual Drive Dual-Parallel Mach Zehnder Modulator (DD-DPMZM) based Radio over Fiber (RoF) link. MZM and DD-DPMZM based RoF link actively enables with two different RF Tones operated at 10 GHz and 12 GHz frequency, respectively. Laser diode acts as a carrier source and its operating frequency is 193.414 THz. The DD-DPMZM based RoF link consist with two phase shifters. Phase shifters are used in such way that the impact of Third Order Intermodulation Distortion (IMD3) could be reduced to get better linearization of the used RoF link. The Fundamental to Intermodulation Distortion Ratio (FIMDR) has been analyzed for conventional and linearized RoF link, respectively, using different optical fiber Impairments. The maximum FIMDR has been measured as 14.27 dB and 46.22 dB, for conventional and linearized RoF link, respectively. An enhancement in FIMDR as 34.32 dB has been observed for linearized RoF link. A comparatively analysis has been established between conventional RoF link and linearized RoF link for better understanding the utility of DD-DPMZM based RoF link. The modelling of linearized RoF link Enhancing FIMDR than conventional RoF link for different optical fiber impairments.
Keywords: Radio over Fiber (RoF), Dual Drive Mach–Zehnder modulator (DD-MZM), Mach–Zehnder modulator (MZM), Third Order Intermodulation Distortion (IMD3), Fundamental to Intermodulation Distortion Ratio (FIMDR)