CAJ | 학술논문

速率方程是研究半导体激光器瞬态过程的理论工具.为了能对实际中各种调制响应进行分析,采用小信号近似法求解了在任意调制信号下半导体激光器的速率方程.得到了任意调制信号下半导体激光器的速率方程的实值解析解,并根据得出的实值解析解分析了半导体激光器的一些调制响应特性,给出了一个调制信号为矩形脉冲电流的具体实例.最后研究并得出了小信号近似法准确的严格条件.根据一些半导体激光器的实际参数,给出了该条件在某些情况下的近似表达.
속솔방정시연구반도체격광기순태과정적이론공구.위료능대실제중각충조제향응진행분석,채용소신호근사법구해료재임의조제신호하반도체격광기적속솔방정.득도료임의조제신호하반도체격광기적속솔방정적실치해석해,병근거득출적실치해석해분석료반도체격광기적일사조제향응특성,급출료일개조제신호위구형맥충전류적구체실례.최후연구병득출료소신호근사법준학적엄격조건.근거일사반도체격광기적실제삼수,급출료해조건재모사정황하적근사표체.
The rate equations are theoretical tools for research of the transient process of semiconductor lasers. Under the arbitrary intensity modulation, the rate equations were solved by using the small-signal approximation in order to analyze some properties of modulation response. The real and analytic solutions of the rate equations were obtained in these circumstances. And a specific example was given in which the modulation signal is a rectangular pulse current. Some properties of the modulation response were analyzed by the real and analytic solutions. The rigorous conditions of accuracy of the small-signal approximation were obtained. The approximate expressions of these conditions in some circumstances were obtained by the parameters of some semiconductor lasers.