The AQ2200 series Multi Application Test System is designed for universal purposes with various modules for various applications. (i.e. Optical Power Meter, Light Source and Optical Attenuator modules). The optical modulator should be used together with the AQ2200-111 optical light source module (PMF option). Select the right modulator to fit your needs: the AQ2200-621 10 Gbit/s optical modulator (1.55 µm), the AQ2200-622 10 Gbit/s optical modulator (1.31 µm) or the AQ2200-631 is 10 Gbit/s optical receiver (1.31/1.55 µm)