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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Compact optoelectronic microwave oscillators using ultra-high Q whispering gallery mode disk-resonators and phase
Kirill Volyanskiy1, Patrice Salzenstein, Hervé Tavernier
1Optics Department, FEMTO-ST Institute UMR CNRS 6174, 16 Route de Gray, 25030 Besançon cedex, France.
Optics Express
|October 14, 2010
Summary
We developed a compact optoelectronic oscillator using phase modulation and high-quality disk resonators. This device generates a 10.7 GHz microwave signal with excellent phase noise performance, crucial for advanced communication systems.
Area of Science:
- Photonics
- Electrical Engineering
- Materials Science
Background:
- Optoelectronic oscillators (OEOs) are critical for generating stable microwave signals.
- Miniaturization and improved phase noise are key challenges in OEO development.
- Disk resonators offer ultra-high quality factors (Q) for enhanced performance.
Purpose of the Study:
- To demonstrate a compact optoelectronic oscillator.
- To leverage phase modulation and ultra-high Q disk resonators for microwave generation.
- To characterize the phase noise performance of the developed oscillator.
Main Methods:
- Utilizing phase modulation techniques within the oscillator loop.
- Integrating ultra-high Q silica disk resonators for frequency selection.
- Employing a 10.7 GHz microwave signal as the carrier frequency.
Main Results:
- Successful generation of a 10.7 GHz microwave signal.
- Achieved phase noise of -90 dBrad²/Hz at 10 kHz offset from the carrier.
- Achieved phase noise of -110 dBrad²/Hz at 100 kHz offset from the carrier.
Conclusions:
- The compact OEO design is effective for generating high-purity microwave signals.
- The use of ultra-high Q disk resonators significantly improves phase noise performance.
- This technology holds promise for applications requiring stable, compact microwave sources.
