The relationship between insertion loss and return loss
Fiber insertion loss is the attenuation at the fiber connection point, such as the attenuation at the connector or adapter.
Return loss is a parameter of the fiber's performance.
When the optical signal transmission in the fiber will encounter obstacles and launch back to the signal transmitter, this is the echo, which is a disadvantage of fiber transmission phenomenon, in order to eliminate this phenomenon, the fiber return loss can be eliminated back wave. Therefore, the greater the value of the return loss, the greater the echoes that can be eliminated and the better the performance of the fiber.