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Rapid updating of optical arbitrary waveforms via time-domain multiplexing
R P Scott1, N K Fontaine, C Yang
1Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA. rpscott@ucdavis.edu
Optics Letters
|May 17, 2008
Summary
We achieved high-fidelity optical arbitrary waveform generation by switching waveforms at 5 GHz using time-domain multiplexing. This method utilizes integrated waveform shapers and advanced characterization for precise waveform control.
Area of Science:
- Photonics
- Optical Engineering
- Signal Processing
Background:
- Optical arbitrary waveform generation is crucial for advanced optical systems.
- High-speed waveform switching is a key challenge in optical signal processing.
Purpose of the Study:
- To demonstrate high-fidelity optical arbitrary waveform generation with rapid waveform switching.
- To achieve precise control over optical waveforms using integrated photonic devices.
Main Methods:
- Utilized compact, integrated silica arrayed-waveguide grating (AWG) pairs for waveform shaping.
- Employed time-domain multiplexing to switch between two distinct waveforms at 5 GHz.
- Characterized the time multiplexer's transfer function using frequency-resolved optical gating (FROG).
Main Results:
- Achieved high-fidelity optical arbitrary waveform generation with 5 GHz switching.
- Shaped two different waveforms from a 10-mode x 10 GHz optical frequency comb.
- Compensated for the time multiplexer's impact, matching waveforms to better than G'=5%.
Conclusions:
- Demonstrated a viable method for high-speed, high-fidelity optical arbitrary waveform generation.
- Integrated AWG-based shapers and FROG-based characterization enable precise optical waveform control.
- This technique has potential applications in optical communications and signal processing.
