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Noise transfer functions of mode-locked semiconductor laser
Sangyoun Gee1, Peter J Delfyett
1Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, Korea. sgee@gist.ac.kr
Optics Express
|February 23, 2010
Summary
This study investigates noise in mode-locked semiconductor ring lasers. A noise transfer function reveals complex structures, confirmed by experiments, impacting timing jitter and pulse energy.
Area of Science:
- Optics and Photonics
- Semiconductor Lasers
- Laser Physics
Background:
- Mode-locked semiconductor ring lasers are crucial for high-speed optical communications.
- Understanding their noise behavior, including timing jitter and pulse energy fluctuation, is essential for performance optimization.
Purpose of the Study:
- To investigate the noise characteristics of mode-locked semiconductor ring lasers.
- To analyze the impact of noise on timing jitter and pulse energy fluctuations.
- To introduce and apply the concept of a noise transfer function.
Main Methods:
- Utilized numerical simulations to model laser noise behavior.
- Developed and applied the noise transfer function concept.
- Conducted experimental noise measurements for validation.
Main Results:
- Numerical simulations predicted a complex structure within the noise transfer function.
- Experimental noise measurements confirmed the predicted complex transfer function structure.
- Identified the noise transfer function as a key factor in laser noise behavior.
Conclusions:
- The noise transfer function effectively characterizes noise in mode-locked semiconductor ring lasers.
- The complex structure of the noise transfer function explains observed noise behaviors.
- Experimental validation confirms the theoretical predictions, advancing laser noise analysis.
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