OPTICAL AMPLIFICATION DEVICE

PROBLEM TO BE SOLVED: To achieve a reduction in cost, a reduction in power consumption, and speed-up of control in suppression of transient response due to optical amplification of burst signals.SOLUTION: An optical amplification device 1 that optically amplifies a burst signal includes a first calc...

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Bibliographic Details
Main Authors HOMEMOTO TORU, MASUMOTO KANA, KATAYAMA MASARU, GYODA KATSUTOSHI, MATSUDA TOSHIYA
Format Patent
LanguageEnglish
Japanese
Published 31.05.2018
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Summary:PROBLEM TO BE SOLVED: To achieve a reduction in cost, a reduction in power consumption, and speed-up of control in suppression of transient response due to optical amplification of burst signals.SOLUTION: An optical amplification device 1 that optically amplifies a burst signal includes a first calculation circuit 11 that analyzes a downlink optical signal and calculates the input strength and the burst width of the burst signal input to the optical amplification device 1 as the uplink optical signal, a second calculation circuit 12 that calculates an attenuation value corresponding to the transient response when the burst signal is optically amplified on the basis of the burst width and the input strength calculated by the first calculation circuit 11, a temporally variable ATT 14 that attenuates the burst signal input to the optical amplification device 1 on the basis of the attenuation value calculated by the second calculation circuit 12, and an optical amplifier 15b that optically amplifies the burst signal attenuated by the temporally variable ATT 14.SELECTED DRAWING: Figure 1 【課題】バースト信号の光増幅に伴う過渡応答の抑制において、コスト低減化、消費電力低減化、制御高速化を実現する。【解決手段】バースト信号を光増幅する光増幅装置1は、下り光信号を解析し、上り光信号として光増幅装置1に入力されるバースト信号の入力強度およびバースト幅を計算する第1の計算回路11と、第1の計算回路11が計算した入力強度およびバースト幅に基づいて、バースト信号を光増幅した際の過渡応答に応じた減衰値を計算する第2の計算回路12と、第2の計算回路12が計算した減衰値に基づいて、光増幅装置1に入力されるバースト信号を減衰させる時間的可変ATT14と、時間的可変ATT14によって減衰したバースト信号を光増幅する光増幅器15bと、を備える、ことを特徴とする。【選択図】図1
Bibliography:Application Number: JP20160228529