The Pass 1550nm Reflect 1310nm FWDM Filter Wavelength Division Multiplexer is a high-performance optical device designed to enable bidirectional transmission over a single fiber by passing 1550nm signals with low insertion loss and reflecting 1310nm signals with high isolation. Utilizing advanced thin-film coating technology and an epoxy-free optical path, it offers excellent wavelength selectivity, thermal stability, and long-term reliability. Ideal for FTTH, PON, and optical monitoring systems, this FWDM supports seamless integration with various fiber optic components and is available with customizable connector types, fiber lengths, and package styles to suit diverse network applications.