What is the difference between an XFP transceiver and an optical transceiver?

by http://www.fiber-mart.com

What is an XFP transceiver?
XFP transceiver (photoelectric converter) is only used for photoelectric signal conversion, and protocol converter used to convert a protocol to another XFP transceiver is a physical layer device, is the fiber optic broadband into twisted pair device , There are 10/100 / 1000M conversion. Protocol converter there are many, most of which is basically a two-tier equipment, often encountered a RAD protocol converter is 2M E1 line into V.35 data lines connected to the router equipment, of course, 2M turn Twisted pair Ethernet, with 2M communication lines can be achieved within the scope of remote access and expansion. These two kinds of equipment on its maintenance is not much, as long as not burned generally not bad.
What is the Optical transceiver?
Optical transmitters and off receivers, optical transmitters are receiving electrical signals that are converted into optical signals transmitted in fiber access, while optical receivers. Network video server is to accept the analog audio and video signals, can be a direct signal from the camera and monitor head, after digital compression coding, popular MPEG-4, the network transmission of special equipment, video servers are generally equipped with Ethernet RJ- 45 interface and fiber FC interface, but also with SCSi interface external hard drive for front-end storage, he is commonly used in remote network monitoring system, the most equipment. Digital optical function is to transfer the image, voice and data signals to be digitized, and then these digital signals are multiplexed, the multi-channel low-speed digital signal into a high-speed signal, and this signal is converted to light signal. The optical signal is reduced to the electrical signal at the receiving end, the restored high-speed signal decomposes the original multi-channel low-speed signal, and finally the data signal is reduced to the image, the voice and the data signal.
The difference between XFP transceivers and optical transceivers
XFP transceiver and optical transceiver are the same place to be photoelectric conversion; and they are different is that the XFP transceiver is mainly transmission network, only photoelectric conversion, does not change the code, not the data for other processing, the transceiver is for Ethernet For example, run 802.3 protocol, only for point-to-point connection. In addition to the photoelectric conversion work, but also on the data signal reuse and demultiplexing, a core transmission video, 485/422 / audio / light volume / network, etc., usually out of the multi-E1 line. XFP transceiver applications such as banking, education and other networking. The SDH, PDH optical transceiver is mainly used for telecom operators, to provide many pairs of point to the point of the data circuit; Video Optical is mainly used for security monitoring, distance education, video conferencing and other video transmission requirements of relatively high real- Can transmit control, switch, voice, Ethernet and other signals to meet the needs of multi-service applications, so we sometimes call it Integrated Optical.
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