Ammann E O
Appl Opt. 1970 Jul 1;9(7):1683-90. doi: 10.1364/AO.9.001683.
The usefulness of three-dimensional vector diagrams in analyzing optical systems is described. The diagrams involved are three-dimensional plots of the positive frequency spectrum of the signal. By using two diagrams to represent a given signal, one for each of two orthogonal linearly polarized components, information on signal polarization is also conveyed. Devices or systems are analyzed by noting how the diagrams of the input signal are successively altered by passage of the signal through the system. The techniques described are most useful with systems containing birefringent and dichroic elements, and with signals containing one or a few discrete spectral components. The diagrams can be used to determine both the output (optical) signal and the (rf) signal resulting from its detection by a square-law photodevice. Examples considered include two types of amplitude modulator, a single-sideband modulator, and a balanced optical detection system.
描述了三维矢量图在分析光学系统中的用途。所涉及的图是信号正频谱的三维图。通过使用两个图来表示给定信号，分别用于两个正交线偏振分量中的每一个，还可以传达有关信号偏振的信息。通过注意输入信号的图如何在信号通过系统时连续变化来分析设备或系统。所描述的技术对于包含双折射和二向色性元件的系统以及包含一个或几个离散光谱分量的信号最为有用。这些图可用于确定输出（光学）信号以及由平方律光探测器对其进行检测所产生的（射频）信号。所考虑的示例包括两种类型的幅度调制器、单边带调制器和平衡光学检测系统。
