Related Experiment Video
Updated: Apr 3, 2026
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.7K
Narrow-linewidth microwave generation using AlGaInAs/InP microdisk lasers subject to optical injection and
Optics Express
|September 15, 2015
Summary
This study demonstrates high-quality photonic microwave generation using a microdisk laser with optical injection and optoelectronic feedback. This method achieves narrow linewidth and low phase noise without electrical filters.
Area of Science:
- Photonics
- Optoelectronics
- Microwave Engineering
Background:
- Photonic microwave generation is crucial for advanced communication systems.
- Achieving narrow linewidth and low phase noise is a key challenge.
- Existing methods often require complex filtering.
Purpose of the Study:
- To demonstrate narrow-linewidth, low phase noise photonic microwave generation.
- To utilize optical injection and optoelectronic feedback for signal stabilization.
- To investigate the impact of various parameters on signal quality.
Main Methods:
- Using an 8-μm-radius AlGaInAs/InP microdisk laser.
- Applying optical injection to achieve the period-one state for seeding.
- Implementing optoelectronic feedback for direct current modulation and locking.
Main Results:
- Achieved a 3-dB linewidth below 1 kHz.
- Demonstrated a tunable frequency range from 8.8 to 17 GHz.
- Obtained single sideband phase noise of -101 dBc/Hz at 10 kHz offset for a 14.7 GHz signal.
Conclusions:
- Successful generation of high-quality photonic microwave signals.
- Optoelectronic feedback effectively stabilizes and locks the signal without electrical filters.
- The study provides insights into parameter dependencies for optimized signal generation.
