Precision Fiber VOA with Low-Mode Distortion All Fiber Types

SKU: HPNA

Engineered for precision laboratory metrology, the HPNA Series VOA measurement-grade Variable Optical Attenuator delivers 0.05 dB repeatability and 65 dB attenuation with minimal signal distortion by utilizing a true optical absorption mechanism. Unlike conventional mechanical blocking or micro-bending methods that alter spatial profiles, this absorption-based architecture preserves launch modal distribution without introducing mode-filtering artifacts — making it ideal for accurate multimode and single-mode device characterizations — while ensuring stable, input-intensity-independent attenuation across wide dynamic power ranges. Compatible with SM, MM, or PM fiber, the VOA includes a USB- or RS232- controlled PCB with a GUI and a wall-pluggable power supply.