What effect may the fiber end face not be parallel to the surface of the object have on the experimental results?

The experimental error is large, the loss increases and the output power is affected.

The end face of the optical fiber is not parallel to the surface of the object, such as poor polishing, scratch, surface damage or edge damage. , it will complicate the end face, lead to large experimental error, increase the signal quality loss of optical fiber transmission, affect the output power of fiber laser, and is not conducive to the later maintenance and upgrading of optical fiber.

In the actual construction process, in order to save time and trouble, most front-line masters will not inspect and clean the end face of optical fiber. They think that as long as the optical fiber is smooth and trouble-free, this is wrong.