Patent ID: 8077299
Filing Date: 2011-12-13
Classification: C03B,G01M

Abstract:
1. A polarization mode dispersion (PMD) characteristic measuring method of measuring PMD characteristic distributions along a longitudinal direction of an optical fiber as an object to be measured by using Brillouin Optical Correlation Domain Analysis (BOCDA), the method comprising steps of: making probe light incident from one end of the optical fiber and making pumping light incident from the other end of the optical fiber; measuring a Brillouin gain spectrum at respective measurement positions along the longitudinal direction of the optical fiber as a gain to be given to the probe light due to Brillouin scattering generated by propagation of the pumping light inside the optical fiber; and calculating PMD characteristic distributions along the longitudinal direction of the optical fiber based on Brillouin gain fluctuation periods along the longitudinal direction of the optical fiber.