PMD EMULATOR

摘要

A PMD emulator comprising a series circuit of an input light fiber (71) which light to be measured is made to enter, a first polarization rotating unit (73) in which M DGD sections (76) and (M-1) polarization rotators (80) are alternately connected in series in such a way that DGD sections are disposed at both ends, an arbitrary-to-arbitrary polarization controller (75) connected to the first polarization rotating unit (73) and adapted to change the polarized state from an arbitrary polarized state to another arbitrary state, and a second polarization rotating unit (74) similar to the first polarization rotating unit (73), and an output light fiber (72) for outputting the light to be measured.