Generation of frequency 32-tupling millimeter-wave based on a dual-parallel polarization modulator

Area of Science:

• Optoelectronics
• Millimeter Wave Technology
• Optical Communications

Background:

• Millimeter wave (mm-wave) generation is crucial for high-speed wireless communication systems.
• Existing mm-wave generation techniques face challenges in achieving high frequencies and signal purity.
• Dual-parallel polarization modulators (DP-PolMs) offer potential for advanced optical signal manipulation.

Purpose of the Study:

• To propose and theoretically analyze a novel scheme for frequency 32-tupling mm-wave generation.
• To investigate the performance of the proposed scheme in terms of optical sideband suppression ratio (OSSR) and radio-frequency spurious suppression ratio (RFSSR).
• To explore the impact of device parameter deviations on the generated signal's quality.

Main Methods:

• Utilizing two cascaded dual-parallel polarization modulators (DP-PolMs).
• Controlling the amplitude and phase shift of the radio-frequency (RF) driving signal.
• Employing a polarization multiplexing structure to cancel the central optical carrier.
• Beating the ±16th order optical sidebands in a photodetector for mm-wave generation.

Main Results:

• Achieved frequency 32-tupling mm-wave generation.
• Simulated OSSR of 52 dB and RFSSR of 47 dB, closely matching theoretical values.
• Investigated the influence of key device parameters on OSSR and RFSSR.

Conclusions:

• The proposed scheme effectively generates high-purity frequency 32-tupling mm-wave signals.
• The cascaded DP-PolM approach demonstrates excellent suppression ratios.
• The study provides insights into the robustness of the scheme against device imperfections.