WG3012 8-Channel Multimode Variable Optical Attenuator850nm, 35dB Range, 0.1dB Step, Open/Closed-Loop, USB/LAN, for 800G/1.6T Multimode Optical Module Production Testing

The WG3012 is an 8-channel multimode variable optical attenuator engineered for parallel attenuation and power balancing in high-throughput multimode optical module production. Each of its eight independent channels operates at 850±20nm with a 35dB attenuation range, adjustable in 0.1dB steps—allowing simultaneous, synchronized control of eight multimode paths without the re-mating and sequential setup that bottleneck conventional single-channel attenuators. Open-loop mode sets a fixed attenuation value for fast production-line tuning, while closed-loop mode locks onto a target output power and automatically compensates for input drift, tightening attenuation accuracy from 0.2dB (open-loop) to 0.1dB (closed-loop). Per-channel output power monitoring (−50 to +10dBm, ±0.1dB accuracy) provides real-time verification without external meters, while 0.05dB output stability and <2.0dB insertion loss preserve measurement integrity across repeated test cycles. USB and LAN interfaces support full program control for ATE integration. The WG3012 is purpose-built for 800G/1.6T multimode optical module production testing, ROSA/BOSA multimode device characterization, optical transceiver module debugging, and fiber network testing—wherever eight multimode paths must be attenuated and verified in lockstep. Its 2U rack-mount, card-insertion chassis (450×320×88mm, 5kg) with a 3.5-inch color LCD suits production floors and lab racks alike.