1. Product Title SM & MM Optical TAP Coupler – 1×2 / 2×4 Passive Monitoring Device 2. Product Overview GracyFiber SM & MM Optical TAP Couplers are passive fiber optic monitoring devices designed to sample optical power with minimal disruption to live network traffic. Available in 1×2 and 2×4 configurations , the devices support both single-mode and multimode optical systems for real-time signal monitoring and diagnostics. 3. Key Features Single-mode and multimode configuratio