... , enlarge 1550nm optical signal.4. Adopt 980nm or 1480nm high linearity, optical isolation,5. The DFB, thermoelectric cooling DFB laser produced by ... ); chassis cooling automatic temperature control.3. Intuitive: The laser is the most expensive machine components, machine equipped with microprocessor ... optical input power (dBm)+3NF(dB) (+3 dBm,@1550nm)3.8~5.5Gain Flatness (dB)<±0.3Optical output ...