The Pass 1310nm Reflect 1550nm FWDM Filter Wavelength Division Multiplexer is a compact, high-performance optical component designed for bidirectional transmission over a single fiber. It utilizes thin-film filter technology to pass 1310nm signals with low insertion loss while reflecting 1550nm signals with high isolation, ensuring efficient wavelength management in FTTH, PON, and other optical communication systems. Featuring an epoxy-free optical path, excellent thermal stability, and customizable configurations for connector type, fiber length, and packaging, this FWDM delivers reliable and precise performance for demanding network environments.