The AQ4320 high-quality Tunable Laser Source can accurately set wavelength range, accommodating various aspects of D-WDM use. High output, high SMSR, and other specifications are excellent for evaluating optical fiber amplifiers and components, D-WDM systems, etc. Features Wavelength range: 1480 to 1580nm (AQ4320A) Continuous sweep High optical output with +10dBm (typ.) (AQ4320A) Side mode suppression ratio: 70dB (AQ4320B) High optical output at 1600nm bａnd (AQ4320D) Wavelength calibration function with built-in wave-length standard