Fiber Laser
Popularly, the term "fiber laser" is often misused to describe a machine capable of cutting or marking metal. In fact, a fiber laser only refers to the way we transport laser light from the source to the material or focusing lens. With fiber lasers, the transport takes place via a fiber optic wire or in English a "fiber optic cable".
Not all light frequencies are ideal to be transported by a fiberglass, but a coherent laser light with a frequency of about 1070 nanometers is particularly easy to drive through a fiberglass. Now let the area around 1070 nanometers belong to the light frequencies on which many lasers work to cut or engrave metal. This is why metal lasers are often referred to as fiber lasers.
