DISPERSION MEASUREMENT DEVICE, CLOCK CORRECTION DEVICE, AND TRANSMISSION DEVICE TO BE USED FOR OPTICAL COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To reduce the size of a device for measuring the characteristics of an optical transmission path.SOLUTION: A reception side conversion part 42 configures a reception part for receiving an optical signal from an optical transmission path 34 via a signal coupling and separating part 56. A reception difference measurement part 48 obtains a reception difference R21 indicating a difference between a time when a first optical signal has been received and a time when a second optical signal having wavelength different from the first optical signal has been received on the basis of a measurement result obtained by an information extraction part 44. A transmission difference measurement part 50 obtains a transmission difference T21 indicating a difference between a time when the first optical signal has been transmitted and a time when the second optical signal has been transmitted on the basis of information included in at least one of the first optical signal and the second optical signal. A dispersion analysis part 52 obtains the dispersion characteristics of the optical transmission path 34 on the basis of the wavelength difference, the reception difference R21 and the transmission difference T21 between the first optical signal and the second optical signal.SELECTED DRAWING: Figure 2