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Tunable complex-valued multi-tap microwave photonic filter based on single silicon-on-insulator microring resonator
Juan Lloret1, Juan Sancho, Minhao Pu
1ITEAM Research Institute, Optical and Quantum Communications Group, Universidad Politécnica de Valencia, Camino de Vera s/n,46022 Valencia, Spain. jualloso@iteam.upv.es
Optics Express
|July 1, 2011
Summary
This study presents a tunable microwave photonic filter using silicon photonics. Researchers explored its tunability and tap configurations for improved performance, offering insights into filter design.
Area of Science:
- Photonics
- Microwave Engineering
- Materials Science
Background:
- Microwave photonic filters are crucial for signal processing.
- Silicon-on-insulator (SOI) microring resonators offer a platform for integrated photonic devices.
- Complex-valued filtering requires precise control over phase and amplitude.
Purpose of the Study:
- To present a complex-valued multi-tap tunable microwave photonic filter.
- To theoretically and experimentally characterize the tunability of two, three, and four-tap filters.
- To investigate the constraints and trade-offs in implementing complex-valued filtering using microring resonators.
Main Methods:
- Utilizing a single silicon-on-insulator microring resonator.
- Exploiting the optical phase transfer function of the microring resonator.
- Theoretical analysis and experimental characterization of filter tunability and tap configurations.
- Evaluating different window-based scenarios for performance enhancement.
Main Results:
- Demonstrated a complex-valued multi-tap tunable microwave photonic filter.
- Characterized the tunability for two, three, and four-tap configurations.
- Identified constraints and trade-offs between tunability, free spectral range, and tap number.
- Evaluated windowing techniques to reduce side-lobe levels.
Conclusions:
- The presented approach enables complex-valued multi-tap tunable microwave photonic filtering.
- The study provides a comprehensive analysis of design trade-offs for microring-based filters.
- Optimized filter performance can be achieved through careful selection of tap configurations and windowing schemes.
