Optical transmission apparatus and optical transmission method
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United States of America Patent
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Nov 27, 2018
Grant Date -
Sep 6, 2018
app pub date -
Feb 14, 2018
filing date -
Mar 2, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An optical transmission apparatus includes a receiver configured to receive a wavelength division multiplexing optical signal including a first optical signal modulated based on a first modulation system and a second optical signal modulated based on a second modulation system with a higher multi-level degree than the first modulation system; a wavelength selective switch configured to attenuate power of the first optical signal to a first level and attenuate power of the second optical signal to a second level lower than the first level; an optical amplifier configured to amplify the wavelength division multiplexing optical signal including the first optical signal and the second optical signal output from the wavelength selective switch; and a transmitter configured to transmit the wavelength division multiplexing optical signal amplified by the optical amplifier.
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