A passive FTTH (Fiber to the Home) node with WDM (Wavelength Division Multiplexing) is an important component in modern fiber optic networks designed to deliver high-speed internet and other services directly to homes and businesses. Wavelength Division Multiplexing (WDM): WDM is a technology that allows multiple wavelengths (or channels) of light to be transmitted simultaneously over a single optical fiber. This increases the capacity of the fiber, as each wavelength can carry separate data streams, which multiply the amount of information transmitted without needing more physical fiber. In a passive FTTH node, WDM can enable different services (like video, data, and voice) to share the same fiber infrastructure, greatly enhancing efficiency. A passive FTTH node incorporating WDM technology presents a robust, scalable, and efficient solution for modern telecommunication needs. It leverages the strengths of passive optical networks and wavelength division multiplexing to deliver high-capacity services to a broad range of end users while minimizing costs and complexity.