| 词条 | AWG |
| 释义 | AWG,英文缩写。起码有三个不同的意思： 一、American Wire Gauge（美国线标\\线规）； 二、Arbitrary Waveform Generator（强制波形发生器）； 三、Array Wave Grating（阵列波导光栅）。 § 简介 一、美国线标（American Wire Gauge） 又称B&S线程（即Brown & Sharps线程） 电线电缆的美国标准-国际电工通用线缆表示方法。下图是英寸与公制单位的对照表，以及相应电缆的耐压值：AWG→mm 电流对照表AWG参照 二、强制波形发生器（Arbitrary Waveform Generator） 用于检测的一种多波形信号发生器。 波形发生器 An arbitrary waveform generator (AWG) is a valuable piece of test equipment. However, in the past the prohibitive price of an AWG – not to mention the amount of desk space needed – has put an AWG out of the reach of many people. Not any more. PicoScope has an integrated arbitrary waveform generator that, when used with a compatible PicoScope Oscilloscope, can generate a waveform of almost any shape. The generated waveform can be injected into the device you wish to test and then analyzed as it progresses through the device to confirm correct operation, or to highlight a fault. You can program the arbitrary waveform generator from a text file or using the built-in AWG editor. The created waveform can have up to 8192 waypoints, allowing you to define complex waveforms. As PicoScope can export CSV and TXT files, you can even capture a waveform using your oscilloscope, modify it (if needed) using the AWG editor, and then play it back using the AWG. 任意波形输出 An arbitrary waveform generator (AWG) is an advanced signal generator that can generate a waveform of almost any shape. The generated waveform can then be inserted into the device you wish to test and then analysed as it progresses through the device to confirm correct operation, or to highlight a fault. Arbitrary waveform generators are often expensive and so are usually only found in high-end test equipment, however, several PicoScope PC Oscilloscopes include a built-in AWG. The arbitrary waveform generator is programmed with a data file, supplied by the user, which defines the output voltage at a number of equally spaced points in time. The circuit uses this data to reconstruct the waveform with a specified amplitude and frequency. PicoScope PC Oscilloscopes that have an AWG, such as the PicoScope 5203 and PicoScope 5204, can be programmed with a standard waveform, such as a sine or a square wave, or can import an arbitrary waveform from a text file. The integrataed AWG editor allows you to create, modify and save waveforms for use with the arbitrary waveform generator. As PicoScope 6 can export CSV and TXT files, you can capture a waveform and then play it back using the arbitrary waveform generator. (To do this you must first modify the file by removing the header rows and time values.) 三、阵列波导光栅（Array Wave Grating） 在光纤通信系统中，最早商用的DWDM模块是由多个三端口的介质膜滤波器（TFF）串联而成，但是当信道数大于16时，基于TFF技术的DWDM模块因损耗太大，不能满足应用需求。阵列波导光栅（AWG）应运而生，成为32通道以上DWDM模块的主要技术途径。 AWG是以平面光路（PLC）技术制作的器件，其基本结构如图1所示，由输入波导、输入星形耦合器、阵列波导、输出星形耦合器和输出波导阵列五部分组成。输入的DWDM信号，由第一个星形耦合器分配到各条阵列波导中，阵列波导的长度依次递增ΔL，对通过的光信号产生等光程差，其功能相当于一个光栅，在阵列波导的输出位置发生衍射，不同波长衍射到不 同角度，经过第二个星形耦合器，聚焦到不同的输出波导中。 AWG主要技术指标 AWG基本结构 |
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