The fiber laser does not require as much maintenance. The fiber laser doesn't need to be cleaned as often as a CO2 laser cutter machine. The fiber laser does not require any preventive maintenance as long as it has access to clean chiller water and that the filters are regularly replaced.
Some things are obvious. A fiber laser has a smaller laser "generator" than a CO2-resonator. Actually, the fiber laser is made by banks of diodes which are combined in a small module. These modules can have a power range from 600 to 1,500 W. To create the final powered resonance, multiple modules are spliced together. This is usually the same size as a small filing cupboard. The fiber-optic cables channel the light and amplify it. Fiber-optic cables transmit the same light as when they were generated, with no loss of power and quality. The fiber-optic cable is then adjusted and focused to cut the appropriate material.