1550nm External Modulation Optical Transmitter -American JDSU Laser, and JDSU Isolator -1x3dBm,1x5dBm,2x7dBm,2x9dBm,2x10dBm 1550nm External Modulation Optical TransmitterFeatures ... American JDUS, UTP;Japanese Fujitsu; high-linear LINBO3 external modulator with American JDUS, Japanese Fujitsu, MITSUBISHI thermoelectric ... .SBS:13~16dBm,or 13-18dBm 1550nm External Modulation Optical Transmitter