1) Especially designed for FTTH,FTTP,FTTO,FTTS 2) Adopts Pin diode as Photoelectricity modules. 3) Adopts Gallium Arsenide Modules as amplifying modules. 4) AGC control 5) 1310&1550 double window, two outputs. 6) With return transmission. Technical Parameters Forward: Input -10+3( -3+1 is the best value) Wavelength: 1100nm1600nm Frequency: 54-862MHz Output: ≥ 82dBmV Unflatless ≤ ±1 Optical Return loss ≥45dB Output Return Loss≥16dB Output Impedance: 75 W Output Level: ≥100dBuV CTB≥ 65 CNR≥ 51 CSO≥ 60 Power Supply: DV12V15V Return Transmission Laser: FP/DFB Output: 0.5mW, 1mW, 2mW Wavelength: 1310nm±30nm or 1550±30nm Optical Connector: SC/APC or FC/APC Bandwidth: 5-42MHz Output Impedance: 75 W Output Return Loss≥14dB Input level 8590dBμV Unflatless ≤ ±1