Optisches Vermittlungssystem

摘要

An optical switching system receives an optical input signal which is a wavelength-division multiplexed and time-division multiplexed signal. The optical input signal is divided into time-division multiplexed optical signals in different wavelength regions and transferred within an optical data bus (800) after being subjected to a predetermined process including a frequency shift. The optical signals in the different wavelength regions are extracted from the optical data bus (800) using optical bandpass filters, and multiplexed into an output optical signal which is a wavelength-division multiplexed and time-division multiplexed signal after being subjected to a predetermined process including a frequency shift.