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Published on: June 8, 2018
Multitap microwave photonic filters with programmable phase response via optical frequency comb shaping
Minhyup Song1, Victor Torres-Company, Andrew J Metcalf
1School of Electrical and Computer Engineering, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907, USA. song55@purdue.edu
Optics Letters
|March 2, 2012
Summary
We developed a programmable microwave photonic filter that precisely controls waveform phase. This filter enables broadband microwave signal compression to its shortest possible duration.
Area of Science:
- Photonics
- Microwave Engineering
- Signal Processing
Background:
- Microwave photonic filters are crucial for signal processing.
- Achieving arbitrary phase control in these filters is challenging.
- Broadband signal compression requires precise phase manipulation.
Purpose of the Study:
- To present a novel programmable multitap microwave photonic filter.
- To demonstrate arbitrary phase response control over a broad bandwidth.
- To enable real-time waveform phase filtering and signal compression.
Main Methods:
- Utilizing optical line-by-line pulse shaping on a 10 GHz flat optical frequency comb.
- Implementing a novel interferometric scheme for complex coefficient taps.
- Conducting high-speed real-time measurements for validation.
Main Results:
- Demonstrated a programmable microwave photonic filter with arbitrary phase response.
- Achieved programmable chirp control of waveforms through phase filtering.
- Successfully compressed broadband microwave signals to their bandwidth-limited pulse duration.
Conclusions:
- The developed filter offers unprecedented control over microwave photonic signal phase.
- This technology facilitates efficient broadband microwave signal compression.
- The novel interferometric scheme opens new avenues for advanced photonic signal processing.
