The invention discloses a method for reducing the noise of an optical amplifier, an optical access device and an optical network system. The method of reducing noise of optical amplifier controller including optical repeater in determining the wavelength offset information of uplink optical signals transmitted by the ONU; the control signal generated according to the wavelength shift information; tunable narrowband filter according to the control signal in optical repeater, the center wavelength adjust its uniform wavelength for uplink optical signal and the ONU transmission the uplink optical signal to send; amplified the ONU filter, and through the transmission of the optical signal after filtering for OLT. The optical access device includes an optical repeater and an optical line terminal. The embodiment of the invention can reduce the influence of the OA noise on the OLT receiver without affecting the amplification performance of the OA to the uplink optical signal.
【技术实现步骤摘要】
【技术保护点】
一种降低光放大器噪声的方法，其特征在于，包括： 光中继器中的控制器确定ＯＮＵ发送的上行光信号的波长偏移信息；根据波长偏移信息生成控制信号； 光中继器中的可调窄带滤波器根据所述控制信号，将自身的中心波长调整为与该ＯＮＵ发送的上行光 信号的波长一致；对放大后的该ＯＮＵ发送的上行光信号进行滤波，并将通过滤波后的光信号传输给ＯＬＴ。
【技术特征摘要】
【专利技术属性】
技术研发人员：徐之光，
申请(专利权)人：华为技术有限公司，
类型：发明
国别省市：94[中国|深圳]
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