介绍了一种电控调谐的外腔半导体激光器，并对其连续调谐特性进行了理论和实验分析。压电陶瓷（ＰＺＴ）（双晶片）的电扫描角度可达１°，采用适当的外腔结构，靠ＰＺＴ可同时改变外腔腔长和光栅衍射角，实现输出波长的调谐。该器件调谐范围最大可达１５ｎｍ，连续调谐范围（无跳模）为５０ＧＨｚ An electrically controlled tunable external cavity semiconductor laser is introduced, and its continuous tuning characteristics are theoretically and experimentally analyzed. Piezoelectric ceramic (PZT) (bimorph) electrical scanning angle of up to 1 °, the appropriate external cavity structure, by PZT can simultaneously change the cavity length and grating diffraction angle, the output wavelength tuning. The device tuning range up to 15nm, continuous tuning range (no hopping mode) of 50GHz