The Pass 1310nm & 1490nm Reflect 1550nm FWDM Filter Wavelength Division Multiplexer is an advanced optical filter designed for triple-wavelength bidirectional transmission in fiber optic networks. It passes 1310nm and 1490nm wavelengths with low insertion loss while reflecting 1550nm signals with high isolation, making it ideal for FTTH and PON systems where downstream and upstream signals share a single fiber. Built with thin-film filter technology and an epoxy-free optical path, this FWDM ensures stable performance, excellent reliability, and minimal signal interference. Customizable in terms of connector type, fiber length, and package, it offers flexible integration into various fiber optic infrastructures.