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Instantaneous frequency measurement system using optical mixing in highly nonlinear fiber
Lam A Bui1, Mark D Pelusi, Trung D Vo
1School of Electrical and Computer Engineering, ARC Centre for Ultra-high bandwidth Devices for Optical Systems, RMIT University, Melbourne, VIC 3001, Australia. lam.bui@rmit.edu.au
Optics Express
|January 7, 2010
Summary
A new photonic system uses four-wave mixing for stable, high-speed frequency measurement without complex electronics. This adaptable technology offers broad frequency response from 1 to 40 GHz.
Area of Science:
- Photonics
- Nonlinear Optics
- Optical Engineering
Background:
- Instantaneous frequency measurement (IFM) is crucial for applications like radar and electronic warfare.
- Traditional IFM systems often rely on complex and expensive high-speed electronics and photodetectors.
- Existing methods can be limited in bandwidth or stability.
Purpose of the Study:
- To demonstrate a novel broadband photonic instantaneous frequency measurement (IFM) system.
- To showcase a stable and cost-effective IFM solution.
- To validate a first principles model for predicting system performance.
Main Methods:
- Utilizing four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) as the core nonlinear element.
- Developing a system that operates without high-speed electronics or specialized photodetectors.
- Employing a first principles theoretical model to analyze and predict the system's response.
Main Results:
- Demonstrated a highly stable photonic IFM system.
- Achieved frequency measurement responses across a broad bandwidth, from 1 GHz to 40 GHz.
- Showcased the system's ability to operate over multiple frequency bands through simple reconfiguration.
Conclusions:
- The demonstrated photonic IFM system offers a stable, high-performance alternative to electronic methods.
- Four-wave mixing in HNLF provides a viable and reconfigurable platform for broadband frequency measurement.
- The system's design simplifies hardware requirements, reducing complexity and potential cost.
