How to apply PoE optical transceiver in weak current engineering?

The PoE fiber optic transceiver is a power-to-electrical converter with Power over Ethernet. It can be used to power remote IP cameras, wireless devices and VoIP phones via a network cable, eliminating the need to install a separate power cord. Currently, PoE fiber transceivers are mainly used in two networks: Gigabit Ethernet and Fast Ethernet, and can support PoE and PoE+. Commonly used PoE fiber transceivers on the market are usually equipped with one RJ45 interface and one SFP interface. Other PoE fiber transceivers are equipped with duplex RJ45 interface and duplex fiber interface to support the use of fixed fiber connectors or SFP optical modules. .

1. How does the fiber optic transceiver work?

The PoE fiber transceiver has two functions, one is photoelectric conversion, and the other is to transmit direct current to the near-end device through the network cable. That is, the SFP interface receives and transmits optical signals through the optical fiber, and the RJ45 interface transmits electrical signals through the network cable and gives The near-end device is powered. So how does a PoE fiber optic transceiver use a network cable to power a near-end device? Its working principle is the same as other PoE devices. We know that there are 4 pairs of twisted pairs in the Category 5 and Category 6 cables. In the 10BASE-T and 100BASE-T networks, only two pairs of twisted pairs are used. The data signal is transmitted, and the remaining two pairs of twisted pairs are idle. At this time, we need to use these two pairs of twisted pairs to transmit DC power.

3. Application of PoE optical transceiver

There are three main applications for fiber optic transceivers: wireless access points, IP cameras, and VoIP phones:

(1) Application of PoE optical transceiver in wireless access point

(2) Application of PoE optical transceiver in IP camera

(3) Application of PoE optical transceiver in VoIP phone

PoE fiber transceivers meet the needs of long-distance, high-speed, high-bandwidth Gigabit Ethernet and Fast Ethernet workgroup users, and can be widely used in various data communication fields such as security monitoring, conference systems, and intelligent building engineering.