POLARIZATION DEPENDENT LOSS DETERMINING METHOD, DETECTION SYSTEM, AND OPTICAL SIGNAL TRANSMISSION STRUCTURE

摘要

A polarization dependent loss determining method, a detection system, and an optical signal transmission structure, relating to the technical field of optical communication and applicable to optical device detection systems. The method comprises: step 101, obtaining two groups of optical power in a first duration; step 102, obtaining, from the two groups of optical power, at least one group of target optical power satisfying a same power constraint condition by means of screening, each group of target optical power comprising a first target power and a second target power respectively from the two groups of optical power; and step 103, determining a polarization dependent loss (PDL) of an optical device on the basis of the at least one group of target optical power. A PDL of an optical device is determined on the basis of functions of the optical device, achieving the effect of accurately detecting the PDL of the optical device.