光纤,人们首先想到的是投术应用与经济效益,却忽视了它的安全性问题。不少人对此缺乏了解,认为光纤作业很平常,不存在高温、高压、电击、易燃易爆等危害,没有明显的危险源,从而产生麻痹思想。实际上,光纤工程的安全工作有其独特性,切不可麻痹大意。光纤的激光由于能量磁低,一般不会造成事故。光纤中的激光射出的光能量呈圆锥状衰减,距离光纤端口越远,危险就越小。光纤中激光的波长一般在1000nm以上,光辐射也会被人的眼液吸收,不会伤及视网膜。但以上情况不意味可以用肉眼直接观察正在运行的光纤,那样做十分危险。大部分激光是不可见光,人的肉眼根本观察不到。如果光纤内激光的光源足 Optical fiber, people think of the first cast is the application and economic benefits, but ignored its security issues. Many people lack of understanding of this, that fiber optic homework is normal, there is no high temperature, high pressure, electric shock, flammable and explosive hazards, there is no obvious source of danger, resulting in paralysis. In fact, the security work of fiber optic engineering has its unique characteristics, must not be careless. Fiber laser due to low magnetic energy, the general will not cause an accident. The energy of the light emitted by the laser in the fiber is attenuated conically, and the farther away from the fiber port, the less dangerous it is. The wavelength of the laser in the optical fiber is generally above 1000nm, and the light radiation will also be absorbed by human ophthalmics, which will not damage the retina. However, the above does not mean that it is very dangerous to directly observe the running optical fiber with the naked eye. Most lasers are invisible and can not be observed by human eyes. If the fiber laser light source enough