光信噪比确认试验, Roadm – EXFO FVA-600 User Manual
Page 105

FVA-600
27
光信噪比确认试验
光信噪比 (OSNR) 表示指定传输信号中夹杂的噪声量。
用 FVA-600 调节传输数据的信号 (来自发射器)和放大自发辐射 (ASE) 噪声 (来自
FLS
)的相对功率,同时通过光谱分析仪监测光信噪比,直到接收器上的误码率达到
给定目标。
ROADM
通过 FVA-600 可调控从可调谐激光光源发送到 ROADM 或被测系统的输入信号的功率
电平,从而辅助您测试 ROADM。
发射器
FVA-600
接收器
FVA-600
FTB-500
光谱分析仪
FLS-2300B
ASE
光源
FLS-2600B
可调谐激光器
FVA-600
下路滤波器
光谱分析仪:插入
损耗和隔离度
低损耗直通通路
阻断器
光谱分析仪:隔离度和
串扰测量
上路滤波器
光谱分析仪:功率
一致性和长期监测
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