... is a standard type of high-performance 1550nm external modulation optical transmitter. Mounted in standard 1U, 19’’ chassis, ... nm1550±10Can be specified before orderingOptical Modulation External modulation Optical output powerdBm 2X5, 2X6,2x7,2x8,2x9SBS thresholddBm16.5Optional ... 2)Fiber: 50KM+EDFA Product series Model1550nm External Modulation Optical Transmitter(Standard type) SBS=13/16/18,CNR≥52OPT ...