Hello, OPM is an optical performance monitor, which can dynamically monitor the DWDM signal in the optical transmission signal, and can accurately measure the channel wavelength, power, and optical signal-to-noise ratio OSNR. OPD is an optical power monitoring unit that can monitor the power value of optical fiber signals in real time. It is mainly used to monitor the link on and off. OTDR can monitor fiber loss, splice loss, and fiber fault location online.2020年4月27日にC***oより発表された
