Frequency-demultiplication OEO for stable millimeter-wave signal generation utilizing phase-locked...

Area of Science:

• Photonics
• Optoelectronics
• Microwave Engineering

Background:

• Millimeter-wave (mmW) signal generation is crucial for advanced communication systems.
• Existing methods for mmW signal generation and stabilization face challenges in complexity and compensation range.

Purpose of the Study:

• To theoretically analyze and experimentally demonstrate a novel frequency-demultiplication optoelectronic oscillator (FD-OEO) for mmW signal generation.
• To showcase the advantages of the FD-OEO in simplifying photonic-assisted frequency multiplication and providing wide frequency compensation.

Main Methods:

• Theoretical analysis of the FD-OEO scheme.
• Experimental demonstration of the FD-OEO for generating a 40-GHz mmW signal.
• Characterization of signal stability and phase noise.

Main Results:

• The FD-OEO was successfully demonstrated, generating a stable 40-GHz mmW signal.
• The generated mmW signal exhibited high stability (1.38 × 10^-12 at 100s averaging time).
• Low single-sideband phase noise (-103 dBc/Hz at 10-kHz offset) and spurious signal levels (-97 dBc) were achieved.

Conclusions:

• The FD-OEO provides a viable method for generating and stabilizing mmW signals.
• The absence of optical first-order sidebands simplifies the frequency multiplication process.
• The FD-OEO offers a wide frequency compensation range, beneficial for mmW systems.