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本文研究了1.5μm InGaAsP隐埋新月形激光器经过再解理而形成的解理耦合腔激光器的单纵模工作与偏置电流、温度和调制频率的函数关系。通过对电学上绝缘、光学上耦合的两个区域进行偏置电平调谐的方法制作的这种双腔激光器,以稳定的单模工作。波长对温度的稳定性在14℃的范围内引起的变化只有0.48 /℃。以高达1Gb/s的速率进行直接调制时仍能保持单模工作。由于缩小了线究和没有分配噪声,从而使这种激光器在通过高度色散的单模光纤的光传输系统中很有用。
In this paper, the work of a single longitudinal mode of a cleaved coupled-cavity laser formed by re-cleavage of a 1.5μm InGaAsP buried crescent-shaped laser is studied as a function of bias current, temperature and modulation frequency. This dual-cavity laser, fabricated by means of offset level tuning of electrically isolated, optically coupled two regions, operates in a stable single mode. The stability of the wavelength to the temperature caused a change of only 0.48 / ° C within the range of 14 ° C. Direct mode modulation at rates up to 1Gb / s still maintains single-mode operation. Such lasers are useful in optical transmission systems that pass through highly dispersive, single-mode optical fibers due to the reduction of the linearity and the unallocated noise.