The appearance of the internet is the greatest invention to be congratulated and recordative in 20th century . it ' s also the costful gift to human beings offered by science 国际互联网的出现，无疑是二十世纪最值得庆贺和纪念的最伟大的发明与创造，是科学奉献给人类的一份尊贵礼物。
High power fiber laser is a novel laser technology that combined of the ld fiber modules and its pumping techniques , double - clad fiber ( dcf ) fabricating technology and fiber grating techniques . fiber laser has a important role of application in many fields . it has come in being a laser industry of several billion usd all over the world , and fiber laser has been called one of the greatest inventions at the beginning of 21st century 高功率光纤激光器是集结了激光二极管光纤模块及其泵浦技术、双包层光纤制作技术及光纤光栅技术与一身的新型激光器技术，在众多领域有着重要的应用前景，国际上已是十几亿美元的产业，被誉为二十一世纪初最伟大的发明之一。
