研究目的
Investigating the influence of integrated optical feedback on tunable lasers using rate equations to describe the laser's behavior and showing experimental results.
研究成果
The study successfully used rate equations to describe a laser with integrated optical feedback, showing that a minimum of the gain voltage indicates good lasing conditions with reduced linewidth and increased SMSR. Monitoring the gain voltage can help set the laser's operation point for optimal performance.
研究不足
The study assumes a fixed, integrated feedback section and does not consider refractive index changes and frequency shifts in some calculations, which may explain mismatches between theoretical and experimental results.
1：Experimental Design and Method Selection:
The study uses rate equations to describe a laser with integrated optical feedback, focusing on the relationship between various laser parameters.
2：Sample Selection and Data Sources:
A tunable InP/polymer DBR laser was used for experimental validation.
3：List of Experimental Equipment and Materials:
The laser includes an active gain section, phase section, and Bragg section with a feedback section.
4：Experimental Procedures and Operational Workflow:
The laser was tuned continuously by applying heating power at the phase and Bragg sections, and measurements of gain voltage, output power, laser linewidth, and SMSR were taken.
5：Data Analysis Methods:
The experimental data were compared with theoretical predictions derived from the rate equations.
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