... features Externally modulated technology for HT8500T optic transmitter, no laser chirp, low dispersion distortion, high extinction ratio, with ... (Typ=0.3 MHz), low noise, and DFB continuous wave laser, be propitious to reduce dispersion effect.The work bandwidth ... 54dB and excellent CTB, CSO index.SBS: 13~19dBm, continuous adjustable.ITU standard wavelength adjustable , users can adjust and set ...