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In order to study the characteristics of pulse amplification in multi-stage cascade ytterbium-doped fiber amplifiers,the three-stage high-gain pulse fiber amplifier with all-fiber structure was experimentally studied based on the master oscillator power amplifier technology.

为了探讨多级级联掺镱光纤放大器的脉冲放大特性，采用主振功率放大技术，实验研究了3级级联、全光纤结构的高增益脉冲激光放大器。

There are three parts included. The first part is the prepositive-amplifier, it gets broadband high gain and flat frequency response. The second part is the U band quadrupler, which composed of two doublers using a PHEMT chip HMMC-5040, a Schottky diode of DMK-2790, a HMMC-5040 amplifier, and a fin-line transitional stage. Maximum output power higher than 60mW is obtained in V band. The third part is a 2nd harmonic gunn oscillator injection locked by the Fundamental Wave,which get about 2GHz locked bandwidth in W band.

电路主要由三部分组成，第一部分为采用HMMC-5618设计的前置放大器，实现了宽带高增益和平坦的频率响应；第二部分为设计的主体，由HMMC-5040设计的二倍频器、DMK-2790设计的二倍频器、HMMC-5040设计的放大器及鳍线过渡段组成的U波段四倍频器，在U波段实现了最高60mW以上的输出功率；第三部分为基波注入锁定谐波Gunn振荡器，在W波段实现了近2GHz锁定带宽。

GaAs RF switch MMICs for cellular phone; GaAs RF power amplifier MMICs for cellular phone; GaAs RF switch MMICs for base station; GaAs RF attenuator MMICs for base station; RF module for base station; GaAs power amplifier MMICs for CATV; MOSFET power devices;SAW resonators; SAW filters; SAW duplexers; N type and P type 4＂-6＂silicon epitaxial wafers.

这次参展的产品有：用于移动蜂窝电话的砷化镓射频单片集成电路；用于移动通信基站的射频IC及电路模块；用于CATV的砷化镓IC；MOSFET等功率器件；声表面波谐振器；声表面波滤波器；声表面波双工器；4＂-6＂N型和P型各类硅外延片。

Based on physical model of high power laser amplifier , simulation software used to analyze laser fluence distribution and performance of amplifier was developed.

基于高功率激光放大器工作的动力学模型，开发了放大器能流分布的模拟软件，实现了对放大器主要性能的计算机模拟。

Locator valve amplifier wear off by the loose dirt, gas consumption in particular will increase the output generated turbulence;② nozzle locator in the amplifier is not parallel to the baffle, baffle cover any of nozzle;③ Output tube, line leak;④ executive body rigidity is too small;⑤ stem movement friction large parts of a block in contact with the phenomenon.

定位器中放大器的球阀受脏物磨损关不严，耗气量特别增大时会产生输出震荡；②定位器中放大器的喷咀挡板不平行，挡板盖不住喷咀；③输出管、线漏气；④执行机构刚性太小；⑤阀杆运动中摩擦阻力大，与相接触部位有阻滞现象。

The weight and volume of the power electronics equipment will be minished greatly by using switch-mode power amplifier instead of the traditional linear power amplifier.

采用电力电子开关功率放大器取代传统的线性功率放大器，极大地减小了装置的体积和重量。

Parallel wiring provides for maximum amplifier output, while series wiring lets you configure multiple woofers to one amplifier at an acceptable impedance.

平行的接线提供最大放大器产品，当系列接线让您配置多台低音扬声器对一个放大器在可接受的阻抗。

SOA can be used in the dispersion compensation in fiber transmission system, all-optical regeneration, optical time division multiplexing, and used as preamplifier, in-line amplifier, boost amplifier in signal transmission. SOA can be also used as wavelength converter, optical switch. In signal procession, nonlinear optical loop mirror based on SOA can be used in optical pulse reshaping, and used as high rate (100Gbit/s) demultiplexer, and optical correlator for optical data retiming.

在信息传输方面，SOA用于色散补偿、全光再生和光时分复用和前置放大、线路放大、功率放大等；在信息交换方面，SOA用于波长转换、光开关等；在信号处理方面，SOA构成的非线性光环形镜用于光脉冲整形、光数据信号再定时的光相关器和高速（100Gbit/s）解复用等。

Our company is specialized in producing all kinds of industrial aluminum radiator, car audio, car amplifier casing manufacturers, annual production capacity of 2000 tons, 3,000,000 units, the company has a cutting machine 3, Machining Center CNC 19 units, 7 punch, hook type shot blasting cleaning machine 1, sand blasting 3 units, 2 sets of automatic tapping machine, bench drill 10, Shuimo hair treatment line 5, gantry 2 oxidation production lines, spray painting a production line, water purification, sewage treatment Line 1, equipment, the vast majority of imported equipment for the South Korean advanced equipment, strong technical force, complete testing means, our products are mainly for the major vehicle manufacturers car audio amplifier ancillary components such as radiators. Through 2004 version of ISO14001-1996 certification.

本公司是专业生产各种工业铝型材散热器，汽车音响，汽车功放外壳的厂家，年生产能力2000吨，300万件套，公司拥有切割机3台，加工中心CNC 19台，冲床7台，吊钩式抛丸清理机1台，喷砂3台，自动攻丝机2台，台钻10台，水磨发丝处理线5条，龙门式氧化生产线2条，涂装喷塑生产线1条，净水、污水处理线各1条，设备绝大部分为韩国进口设备，设备先进，技术力量雄厚，测试手段齐全，我司产品主要为各大汽车生产商的汽车功放音响等散热器零部件配套。2004年公司通过ISO14001-1996版认证。

In the first part of the thesis, we propose and investigate experimentally a gain-clamped S-band erbium-doped fiber amplifier, a stable and single-longitudinal-mode oscillation of an S-band EDF ring laser. The behaviors and performances of the S-band amplifier have also been discussed in the text.

本论文的第一部分是提出一个S频段的增益箝制掺铒光纤放大器（Erbium-Doped Fiber Amplifier： EDFA）与一 S 频段的单模光纤回路型雷射。S频段的增益箝制EDFA的光特性与其行为都在本文中被探讨。

The second is to cut a mere 100 calories from your diet , which is the equivalent of a tablespoon of butter.

第二个就是从你的饮食中减少一百卡路里，只是相当于一大汤匙的黄油。

This is where the Rorschach test comes in.

现在，罗氏测试就出现了。