B=Power amplifier,L=In-line amplifier,
CM: Control mode,ACC=Automatic current control,APC=Automatic power control
AGC=Automatic Gain Control
PW: Output power in dBm, example:10-10dBm ,13-13dBm,20-20dBm,27-27dBm
PF: Pigtail fiber, 0=250um,1=900um,2=2mm,3=3mm
C: Connector,FU=FC/UPC,FA=FA/APC,SA=SC/APC