英语翻译多波长可开关光纤激光器具有全纤结构、藕合...

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More fiber laser wavelength can switch has the fine structure,the coupling wastage,small volume facilitate integration and many other advantages,is WDM and DWDM (DWDM) important light source.It's performance directly determine the optical communication system of quality,and the growing importance,so it is urgent to its further study,improve the performance becomes a necessary tendency.

This paper expounds the double wave of AWG based on optical fiber laser research,taken together,this thesis mainly divided into the following several pars:

1.Expounds the basic principle of the optical fiber laser and basic structure,and introduces several kinds of wavelength can switch erbium laser optical fiber.

2.On the experiment to have in the optical instrument is introduced in detail,including EDFA,optical attenuator,optical couplers,light WDM device,light the light switch,isolation,filter and phase modulator,strength modulator and so on.

3.To optical fiber laser wavelength further research,and expounds several more stable at room temperature wavelength optical fiber laser technology.

4.Based on double wave AWG optical fiber laser experimental design in detail.

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More fiber laser wavelength can switch has the fine structure, the coupling wastage, small volume facilitate integration and many other advantages, is WDM and DWDM (DWDM) important light source.It's p...

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其他类似问题

问题1：英语翻译包子的历史是从诸葛亮说起的.诸葛亮经过苦思苦想,下令让士兵们杀猪,宰牛,将牛肉和猪肉混合在一起,剁成肉泥,和入面里,做成人头形状蒸熟了.由此开始,生活中,人们不渐渐做起“馒[英语科目]

The history of "bun" should refer to Liang Zhuge.After being brooded over,he required the soldiers to kill pigs and cows and mix their meet together.When chopped up,the meat was put in to wheat flour and the whole thing should be shaped as human head.Since then,people started to make steamed bread as food.With the development of the society related with the need of the food,people put meet stuffing inside those steamed bread and called them "bun".Since it's a package of wheat flour and meet,"bun" is a great name for it.

问题2：英语翻译介绍了近年国内甲醇产业最新发展情况,特别对煤基甲醇和以它为原料生产低碳烯烃作了比较详细论述.煤基甲醇制乙烯和丙烯在我国具有重要意义,2006年我国甲醇表观消费量达800万吨[英语科目]

Introduced in recent years the domestic methanol industry developments, especially for coal based methanol and take it as the raw material for the production of low carbon olefin were compared in detail. Preparation of ethylene and propylene coal based methanol has important significance in our country, in 2006 China's methanol the apparent consumption amounted to 8000000 tons, demand in 2007 will reach 9000000 tons, in the next few years will be an annual growth rate of 8%-10%. Rapid growth, methanol production capacity and output of especially the rise of coal based methanol has caused concern. Expected, the coal based methanol as raw material for the production of ethylene, propylene and as new fuels and related technology, and development of space has the bright in China and broad market prospect. Introduced in recent years the domestic methanol industry developments, especially for coal based methanol and take it as the raw material for the production of low carbon olefin were compared in detail. Preparation of ethylene and propylene coal based methanol has important significance in our country, in 2006 China's methanol the apparent consumption amounted to 8000000 tons, demand in 2007 will reach 9000000 tons, in the next few years will be an annual growth rate of 8%-10%. Rapid growth, methanol production capacity and output of especially the rise of coal based methanol has caused concern. Expected, the coal based methanol as raw material for the production of ethylene, propylene and as new fuels and related technology, and development of space has the bright in China and broad market prospect.

问题3：英语翻译小说《卖油郎独占花魁》主要写了被骗卖到妓院,因才貌双全,名噪京都,被誉为“花魁娘子”的莘瑶琴与一个生活在社会底层、无依无靠,却老实本分、真情实意的卖油郎秦重之间的结[英语科目]

The novel titled "The oil seller and the song girl(既然是出自醒世恒言的小说,我认为也可直接用拼音）'mainly describe the love between a prostitutes who is sold to brothel by lies in BianLiang(北宋都城 当时京都）and a poor helpless but reliable oil seller in the bottom of the society.The appearance and talent of this unfortunate girl was wll-known around the whole city,however,the oil seller is so ordinary.The majority of people appreciate this romantic love story while someone suspect the happiness of the lovers if it's as same as we witness.In the background of that social atmosphere at that time,is it really a feasible means of combination?Personally,the combination between these two people can be attributed to nonsense.This atrticle will talk about this topic.

问题4：谁能帮我准确翻译一段文字反对地地道道地地道道[语文科目]

为了更好地保存,本画是装在纤维板上的.多年的实践表明,这种方法明显地优于通常所用的装在双层亚麻布上的方法.这种材料（化学）反应极微,完全没有亚麻衬布滑动与折叠等缺欠.

Hans K Neubert （署名）

艺术画师,艺术品修复师

问题5：英语翻译随着社会的发展,越来越多的犯罪呈现集团化和团伙化,有组织犯罪已成为犯罪结构的主要形式.犯罪组织涉及的犯罪成员众多,若要在众多的犯罪成员当中辨别出犯罪成员头目,分析犯[英语科目]

英语

With the development of society, more and more crime groups and the present TuanHuoHua,

Organized crime has become the main form of crime structure. Criminal organizations involved in the crime

Many members of the sin, if want to in many of the crime of members tell crime head members

Yard, and analyzes the relationship between the crime member asked for investigators, not one

Easy, therefore, this kind of case investigation should be additional monarch new size. The criminal organization is

The social network a form, has social network basic characteristics, so

Social network method can criminal organizations for the mining of relationship.