Ando AQ4320A Overview The Ando AQ4320A is a Tuneable Laser. Features Include: 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 wavelength standard