Epon uses single-fiber wavelength division multiplexing technology

At its core, EPON uses wavelength division multiplexing(WDM) to separate upstream and downstream traffic over a single fiber. The OLT broadcasts data downstream to all ONUs, which filter packets based on MAC addresses. Upstream, time-division multiple access (TDMA) ensures. EPON, or Ethernet Passive Optical Network, is a fiber-optic network standard that uses Ethernet packets to deliver high-speed data, voice, and video services. As a key player in the FTTH (Fiber to the Home) revolution, EPON enables cost-effective, scalable internet access by leveraging passive. This integration allows multiple wavelengths to transmit data over a single fiber, significantly enhancing efficiency.