Features: because the fiber core diameter is small, easy to form a high power density in the core, so the fiber laser has high conversion efficiency, low threshold, high gain, narrow linewidth, and can connect with the current optical fiber communication system is convenient and efficient.

Characteristic two: because of the good flexibility of optical fiber, fiber laser has the characteristics of compact, flexible, compact structure, cost-effective, and easier to integrate the system.

Characteristic three: compared with the traditional solid-state laser and gas laser, the fiber laser has higher energy conversion efficiency, compact structure, high reliability, and is suitable for mass production.

Characteristic four: compared with the semiconductor laser, the fiber laser has better monochromatic property, smaller chirp and distortion in modulation, and smaller coupling loss with the fiber.