C-band EDFA is a core device for realizing undistorted transmission of optical signals in optical communication systems. According to its position and function in the signal amplification link, it can be divided into three types: Pre (Preamplifier), In-Line, and Booster.
1. Pre EDFA
"Weak Signal Amplifier" at the Receiving End
Box Optronics provides pre EDFAs with input power ranges of -35~25dBm and 45~25dBm; and small signal gain coefficients of 35@-35dBm Input and 45@-45dBm Input.
Applications of pre-EDFA:
Receiving end of optical communication systems (e.g., backbone network optical receiving equipment, 5G base station backhaul receiving units), OLT (Optical Line Terminal) receiving module in FTTH (Fiber to the Home) access networks, and satellite communication ground stations (amplifying weak optical signals transmitted back by satellites).
2. In-Line EDFA
"Signal Attenuation Compensator" in the Transmission Link
Box Optronics provides in-line EDFAs with an input power range of -25~3dBm and a saturated output power of 13/17/23/25/26...dBm.
Applications of in-Line EDFA:
Land backbone networks (such as inter-provincial and cross-border optical transmission lines), transoceanic submarine cable systems, compensation for transmission losses of single-mode optical fibers, etc.
3. Booster EDFA
"Signal Power Enhancer" at the Transmitting End
Box Optronics provides power-enhanced EDFAs with an input power range of -6~3dBm and a saturated output power of 15/17/20/23/25/26...dBm.
Applications of booster EDFA:
Transmitting end of WDM (Wavelength Division Multiplexing) systems (connecting to fibers after amplifying multi-channel signals), long-distance links for Data Center Interconnection (DCI) (10-80km), transmitting end of 5G base station backhaul (enhancing signal power to cover remote base stations), and CATV (cable TV) optical transmission systems (enhancing signals to cover more users).