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Phase jitter in an injection-locked semiconductor laser
Optics Letters
|September 23, 2009
Summary
We derived an expression for phase jitter in injection-locked semiconductor lasers, enabling power spectrum determination. Theoretical findings align well with prior experimental data.
Area of Science:
- Optics and Photonics
- Semiconductor Device Physics
Background:
- Semiconductor lasers are crucial for optical communications.
- Injection locking is a technique to improve laser stability and spectral properties.
- Phase jitter affects laser performance and signal integrity.
Purpose of the Study:
- To derive a theoretical expression for the mean-square phase jitter of an injection-locked semiconductor laser.
- To determine the power spectrum of the locked laser based on the derived phase jitter expression.
- To validate the theoretical model by comparing it with existing experimental results.
Main Methods:
- Derivation of a mathematical expression for mean-square phase jitter.
- Analysis of the power spectrum of the injection-locked laser.
- Comparison of theoretical predictions with previously published experimental data.
Main Results:
- A closed-form expression for the mean-square phase jitter was successfully derived.
- The derived expression accurately predicts the power spectrum of the injection-locked semiconductor laser.
- Theoretical results show good agreement with experimental data from 1988.
Conclusions:
- The developed theoretical model provides a reliable method for analyzing phase jitter in injection-locked semiconductor lasers.
- The study confirms the validity of the theoretical approach through experimental validation.
- This work contributes to a better understanding and prediction of semiconductor laser performance.
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