The Pass 1490nm Reflect 1310nm & 1550nm FWDM Filter Wavelength Division Multiplexer is a high-performance optical filter designed for precise wavelength routing in fiber optic communication systems. It passes 1490nm signals with minimal insertion loss while reflecting 1310nm and 1550nm wavelengths with high isolation, enabling efficient signal separation and integration over a single fiber. Built using advanced thin-film coating technology and featuring an epoxy-free optical path, this FWDM filter offers excellent stability, low polarization-dependent loss, and long-term reliability, making it ideal for FTTH, PON, and other wavelength-specific applications. Custom connector, fiber length, and package options are available to meet specific network requirements.