This paper describes the definition of“return wave attenuation”and“reflect attenuation”,introduces theoretically the meaning of “return wave attenuation” on view point of power,points out the difference between “reflect attenuation” and “return wave attenuation” and demonstrates the test connection used as “return wave attenuation”measurement before being really “reflect attenuation” measurement.

Identification of the return loss and structural return loss of telecom cables;

Influences of polishing on return loss of optical fiber connectors;

In order to improve the surface quality and machining efficiency for the end-face of fiber optic connector and to advance the performance of transferring optical signals,the conventional polishing way must be improved to meet the requirements of next generation fiber optic connector with lower insertion losses and return losses.