The filter WDM (FWDM filter) is a device that uses thin-film filter (TFF) technology to combine or separate light of different wavelengths over a wide wavelength range. It expands the capacity of a single fiber and enables bidirectional communication, making it widely used in optical network upgrades or new service introduction. The compact ABS box structure features low insertion loss, high channel isolation and stable wavelength control, suitable for telecom and WDM network applications. Supports 1310/1490/1550nm wavelengths with configurable connectors per port.

TFF technology, wide wavelength range Expands single-fiber capacity, bidirectional communication Low insertion loss, high channel isolation Supports 1310/1490/1550nm customization