If the contaminated fiber contacts the normal fiber end face, it will contaminate the normal fiber end face, resulting in abnormal attenuation, reflection and other problems, affecting the quality…

If the contaminated fiber contacts the normal fiber end face, it will contaminate the normal fiber end face, resulting in abnormal attenuation, reflection and other problems, affecting the quality of the fiber link. Therefore, before and after measuring the optical power, the optical fiber interface needs to be cleaned.