Temporal locking of pulses in injection locked oscillators

Area of Science:

• Physics
• Electrical Engineering
• Nonlinear Dynamics

Background:

• Oscillators are fundamental in signal generation.
• Achieving ultra-low phase noise and precise timing simultaneously is challenging.
• Injection-locking is a known technique to control oscillator behavior.

Purpose of the Study:

• To demonstrate a novel injection-locking effect in oscillators.
• To achieve simultaneous generation of ultra-low phase noise continuous-wave (CW) signals and precisely timed pulses.
• To investigate the underlying nonlinear mechanisms and potential applications.

Main Methods:

• Theoretical modeling of pulse propagation in a cavity.
• Experimental demonstration using an optoelectronic oscillator (OEO).
• Utilizing strong injection to influence phase pulse waveforms.

Main Results:

• Demonstrated a
• temporal-locked
• oscillator generating both CW and pulsed signals phase-locked to an external source.
• Observed constant pulse period despite cavity delay drifts.
• Confirmed self-adaptation of instantaneous frequency to delay variations, preserving pulse periodicity.

Conclusions:

• The novel injection-locking effect enables stable, dual-domain signal generation.
• This technique offers precise timing and ultra-low phase noise for advanced applications.
• The findings have implications for metrology, communications, and sensing.