The shot noise and thermal noise with homodyne demodulation technique is given in this article. And phase noise induced with different time delay is also analyzed.
给出了采用零差解调技术时干涉系统的散粒噪声和热噪声，并且分析了在不同时间延迟情况下的相位噪声。
2
As a result, the process of the spin excitation delay through spin polarized excitation is not related to temperature; however, the process through thermal excitation is temperature dependent.
结果表明：经自旋极化激发实现的自旋激化弛豫过程与温度无关，而经热激活的自旋激发弛豫过程与温度有关。
3
Large delay systems in the control process are very common and difficult to control, such as the majority thermal objects in the coal-fired power plant are with a large time delay.