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<p>Remodulation based 48-tuple millimeter-wave generation technique is being proposed in this manuscript. The feasibility of proposed scheme has been verified by mathematical analysis and simulation investigation. The system achieved high frequency multiplication factor of 48 by utilizing only four MZMs organized into two similar dual parallel MZM (DPMZM) structures. The DPMZM-1 acts as 12-tupler as it converts 2.5&#xa0;GHz local oscillator signal into optical signal dominated by 6th order sidebands. The 30&#xa0;GHz electrical signal detected by photodetector is remodulated by quadrupler DPMZM-2. The optical spectrum of quadrupler output displays 26&#xa0;dB optical sideband suppression ratio and 120&#xa0;GHz separation between dominating sidebands. Finally, 48-tuple mm-wave signal is detected with 20&#xa0;dB radio frequency sideband suppression ratio. The sideband suppression ratios have been improved by using increased MZM extinction ratio. Further, the influence of optical phase offset, electrical phase offset and laser relative intensity noise, on the sideband suppression ratios is analyzed quantitatively. Sideband suppression ratios and fiber transmission distance have been appreciably improved by including demux in the proposed system.</p>

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48-tuple mm wave generation scheme using remodulation with improved sideband suppression ratios

  • 期刊论文

  • 发表日期：

    2025年2月8日

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  • Ajay Kumar,
  • Deepak Kedia,
  • Shelly Singla

摘要

Remodulation based 48-tuple millimeter-wave generation technique is being proposed in this manuscript. The feasibility of proposed scheme has been verified by mathematical analysis and simulation investigation. The system achieved high frequency multiplication factor of 48 by utilizing only four MZMs organized into two similar dual parallel MZM (DPMZM) structures. The DPMZM-1 acts as 12-tupler as it converts 2.5 GHz local oscillator signal into optical signal dominated by 6th order sidebands. The 30 GHz electrical signal detected by photodetector is remodulated by quadrupler DPMZM-2. The optical spectrum of quadrupler output displays 26 dB optical sideband suppression ratio and 120 GHz separation between dominating sidebands. Finally, 48-tuple mm-wave signal is detected with 20 dB radio frequency sideband suppression ratio. The sideband suppression ratios have been improved by using increased MZM extinction ratio. Further, the influence of optical phase offset, electrical phase offset and laser relative intensity noise, on the sideband suppression ratios is analyzed quantitatively. Sideband suppression ratios and fiber transmission distance have been appreciably improved by including demux in the proposed system.