In recent years, hundreds of millions of residents of residential users demand

While large enterprises continue to develop its network scale is constantly exp

Power system has access points scattered field complex environment, the access

1. Optical wavelength division multiplexing (WDM) technology WDM (Wavelength Di

XYT-CWDM (Coarse Wavelength Division Multiplexing) sparse wavelength division m

EDFA in WDM systems can be used as a preamplifier, line amplifiers and power amp

In recent years, WDM technology mainly in two directions toward the ultra-long-r