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The ‘‘gain lever’’ effect in two-section single quantum well lasers can be used in enhancing the frequency modulation (FM) efficiency of the laser without a corresponding increase in the FM noise, i.e., linewidth. Theoretical and experimental results of the FM efficiency, speed, tuning range, and linewidth will be discussed and compared to other tunable laser structures.
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Kam Y. Lau (1990) studied this question.
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