Since the output of the laser beam can be connected directly through an optical fiber, it can be transmitted to the target via a cable. This is suitable for laser processing machines as it facilitates focus design on the workpiece.

The amplification efficiency is good because excitation and excitation emission take place in the thin core of the cable.

Fiber optic cables are thin and long and cool easily. Extending the cable is also easy. This also helps increase production.

Optical fibers are resistant to vibration and can be made compact, thus saving maintenance costs.

Long service life and low maintenance costs. Maintenance costs can be further reduced by combining with long-life semiconductor lasers.

Various circuit configurations have been devised by appropriately arranging optical combiners (devices that collect a plurality of lights) and optical combiners (optical splitters), since optical fiber-related components can be used to solidify the optical circuit.