PLURAL BANDS LIGHT AMPLIFIER

摘要

PROBLEM TO BE SOLVED: To solve a problem caused by the crosstalk of a filter diving a band when light is amplified by dividing the band into a C-band and an L-band at the time of optical communication. SOLUTION: A filter for interrupting the light of a wavelength except for the amplification wavelength band of an optical amplifier is installed in a monitor when input light and output light are reflection-monitored.