Precision USB High Speed Optical Attenuator

SKU: PNSA

The Precision High-Speed Optical Attenuator maintains a constant attenuation or output power, regardless of environmental fluctuations. Once the attenuation is set, we respond to input power change quickly. This is achieved by integrating two tap detectors at the fiber input and output of a NanoSpeedTM attenuator and controlling the ratio using a feedback closed-loop circuit. We also have an output power control mode, where the output tap is used in the feedback control. The value is settable via a USB computer interface. The module can also compensate for slow polarization-dependent loss changes and fast optical power surges since the tap monitor can detect these variations, and the feedback will cancel them. Our non-mechanical device has passed the most stringent mil-spec and space flight qualifications and is designed for over 20 years of continuous operation. The module comes with a wall-plug 12V power supply.