Active modes were presented and have been used to stabilize the output power of the laser . by heating fiber bragg grating , edf laser was tuned and obtained multiwavelength laser output 文中进一步对稳定激光器的光强输出与调谐进行了研究,采用一种主动式的稳光强方案并取得了一定的效果,同时通过对布拉格光纤光栅的调谐获得了具有很好可重复性的多波长激光输出。
Then the problem of asymmetric information arises . this study concentrates on the principal and agent model of enterprise , tries to explain the presupposition and necessity of incentive mechanism , and discusses its principles , regulations , and active mode 本论文主要研究在不对称信息条件下,企业的委托?代理模型,通过该模型的构造,说明企业制定激励机制的前提和必要性,并讨论了企业激励机制设计理念、原理、操作规范和行动模式等问题。
The receiver works on active mode and passive mode in different time . in active mode , the receiver is narrow - band and high sensitive , and if phase - lock technology is used to stabilize receiving frequency . and in passive mode , the receiver is an all - power millimeter wave radiometer with periodic calibration to improve measure precision 此接收机采用分时工作体制,在主动工作方式时为窄带的高灵敏度毫米波接收机,接收机中采用中频锁相技术,简化了毫米波锁相带来的困难;在被动工作方式时为全功率型的毫米波辐射计,这种辐射计在每次测量后都采用两个标准源对辐射计定标,实现周期定标,消除因系统增益波动和有效本机噪声波动带来的测量误差,提高测量测量精度。
Using fiber grating to substitute traditional wavelength - selecting components , the 8nm tuning range is realized at a repetition frequency of 2 . 5ghz . ( 5 ) . the wavelength - tuning methods of an active mode - locked fiber laser using a ld as a modulator are researched , and two tuning methods including temperature tuning ( 4 )对主动锁模光纤激光器的波长调节技术进行了研究,用光纤光栅代替传统的波长选择器件实现了主动锁模光纤激光器的波长调谐,并获得了波长连续调谐范围达8nm 、重复频率2 . 5ghz的稳定的光脉冲输出。