At present, there are many types of fiber optic transceivers on the market, such as unmanaged fiber optic transceivers, network managed fiber optic transceivers, industrial-grade fiber optic transceivers, and PoE fiber optic transceivers. All of these fiber optic transceivers can realize photoelectric signal conversion. Among them, PoE fiber The transceiver can also supply power to PoE devices through a network cable. The following are application examples of fiber optic transceivers and PoE fiber optic transceivers.

Optical fiber transceiver for closed-circuit television monitoring system (CCTV) 

The following figure shows the architecture of a typical closed-circuit television monitoring system (also called an analog video monitoring system) designed using fiber optic jumpers and fiber optic transceivers. For analog cameras, if you want to connect the camera to a cassette video recorder VCR or a digital hard disk video recorder DVR, you should add a pair of fiber optic transceivers between the server room and the analog camera. At this time, the video signal will pass through the fiber optic transceiver. Converted to optical signal transmission.For the PTZ camera, because it will transmit both video signals and data signals, two different fiber optic transceivers or fiber optic transceivers with these two functions should be installed.As we all know, fiber optic transceivers need to be used in pairs. Therefore, one of the fiber optic transceivers should be placed near the fiber end of the camera, and the other fiber optic transceiver should be placed near the end of the cassette video recorder VCR or digital hard disk video recorder DVR. In addition, for better management, all fiber optic transceivers near the server room can be installed in a rack-mounted transceiver chassis. 

PoE optical fiber transceiver for IP network video surveillance system
As shown in the figure below, the camera in this solution is a PoE surveillance camera that can support Power over Ethernet technology. A pair of PoE fiber optic transceivers are installed at both ends of the fiber to facilitate the conversion between electrical and optical signals. In addition, a pair of PoE fiber optic transceivers are installed on the PC side of the video recording. For ease of management, the fiber optic transceiver near the network switch can be installed in a rack-mounted transceiver chassis.

Conclusion
In fact, the use of optical fiber instead of coaxial cable and unshielded twisted pair can improve the video quality, network bandwidth and transmission distance of the video surveillance system. The use of fiber optic transceivers in the CCTV/IP network video surveillance system can extend the signal transmission distance while ensuring high-quality images, which will save more manpower, time and costs for network upgrades.