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The EPON system consists of multiple optical network units (ONU), an optical line terminal (OLT), and one or more optical networks (see Figure 1). In the extension direction, the signal sent by the OLT is broadcast to all ONUs. 8h Modify the frame format, redefine the front part, and add the time...

Fiber Optic Sensor The fiber optic sensor is composed of a light source, an incident fiber, an exit fiber, a light modulator, a light detector, and a demodulator. The basic principle is to send the light of the light source to the modulation area through the incident fiber, and the light interact...

Network management is the guarantee of network reliability and a way to improve network efficiency. The operation, management and maintenance functions of the network management can greatly increase the available time of the network, and improve the utilization rate, network performance, service ...

1 Introduction With the rapid development of broadband access technology, various emerging broadband access technologies have emerged after the rain. After the PON technology is DSL technology and cable technology, another ideal access platform, PON can directly provide optical services or FTTH s...

1 Introduction PoE is also called Power over LAN (PoL) or Active Ethernet, sometimes referred to as Power over Ethernet for short. This is the latest standard specification that uses existing standard Ethernet transmission cables to transmit data and power at the same time, and maintains compatib...

Overview of Power Over Electricity (POE) POE (Power Over Ethernet) refers to some IP-based terminals (such as IP phones, wireless LAN access points AP, network cameras, etc.) without changing the existing Ethernet Cat.5 wiring infrastructure. While transmitting data signals, it provides DC power ...