ER3000是一种高精度、快速测量永磁器件偏振消光比（PER）的仪器。PER是PM光纤慢轴光功率与快轴光功率的比值，是PM光纤和其他PM器件的重要特性。ER3000在测量期间还提供最小和最大PER的保持功能，并监控相对功率。因此，ER3000对于表征PM器件的PER，以及将PM光纤对准激光二极管、偏振器和其他PM器件非常有用。
The ER3000 is an instrument that measure PER (Polarization Extinction Ratio) of PM device with high accuracy and fast speed. PER is the ratio of optical power in the slow axis of PM fiber to optical power in the fast axis, and is an important characteristic of PM fiber and other PM devices. The ER3000 also provides the holding function at minimum and maximum PER during measurement and monitors the relative power. So ER3000 is very useful to characterize the PER of PM devices, and to align PM fiber to laser diode, polarizer, and other PM devices.
