1. Product Title Reflective WDM High Isolation 1310/1550 nm Filter 2. Product Overview GracyFiber Reflective WDM (High Isolation) is a compact bidirectional wavelength filter designed to separate 1310 nm and 1550 nm optical signals within a single-fiber system. Two wavelength-routing configurations are available: 1310 nm Pass / 1550 nm Reflect and 1550 nm Pass / 1310 nm Reflect . The device operates across 1260–1620 nm and provides transmission isolation of ≥50 dB , together