Brief introduction of household OLT optical modem equipment, optical fiber transceiver and photoelectric switch

Optical fiber is a kind of optical glass fiber, which transmits optical signals and cannot be directly connected with network cables. It needs to use photoelectric conversion equipment to convert optical signals into network signals. Common photoelectric conversion equipment includes household OLT optical cat equipment and optical fiber transceiver And photoelectric switch. Next, the editor will give you a brief introduction. If you are interested, let's take a look!

OLT optical modem equipment, optical fiber transceiver, household photoelectric switch

1. Household fiber optic cat equipment

OLT optical modem equipment is also called modem. Its main function is to perform signal conversion. It is a relay device for network transmission. "OLT optical modem equipment" is generally used for transmission distances exceeding 20KM, speeds exceeding 2M, and SDH/ When optical transmission equipment such as PDH is used for transit, optical modems are mainly installed at both ends of the optical fiber, and the transmitted data is converted between electrical signals and optical signals. When optical broadband is installed in the home, optical modems are used to convert signals. , So that computers and other devices can recognize these signals, and the current OLT optical modem device is a multi-function device integrating telephone, TV, broadband, router, and WiFi.

2. Optical fiber transceiver

Optical fiber transceiver is a kind of photoelectric conversion equipment that exchanges short-distance twisted-pair electrical signals and long-distance optical signals. The optical signal is input from the optical port and the electrical signal is output from the electrical port (RJ45 crystal head interface). The process is to convert electrical signals into optical signals and transmit them through optical fibers. At the other end, the optical signals are converted into electrical signals, and then connected to routers, switches and other equipment. According to the transmission distance, they can be divided into single-mode and multi-mode transceivers. ①Single-mode optical fiber transceiver: the transmission distance is between 20 kilometers and 120 kilometers; ②Multi-mode optical fiber transceiver: the transmission distance is between 2 kilometers and 5 kilometers.

In the transmission process, fiber optic transceivers must be used in pairs, suitable for distances of more than 100 meters, each indicator light represents a different meaning, 1000-when it is on, it represents 1000M speed, 100-when it is on, it represents 100M speed; FX---- When it is on, it means that the pigtail is connected, and when it is flashing, it means that data is being transmitted; FX LINK/ACT—when it is on, it means that the network cable is connected, and it means it is transmitting data; when it is on, it means that the power cord is connected; TX LINK/ACT— —When it is on, it represents the full-duplex rate, and when it is off, it represents the half-duplex.

Three, photoelectric switch

The photoelectric switch is a network transmission relay device. The difference between it and the ordinary switch is that it uses fiber optic cable as the transmission medium. It uses a fiber channel with a higher transmission rate to connect with the server network or the internal SAN network to make the entire The network has a very large bandwidth, so the transmission rate is faster and the anti-interference ability is stronger.

There are 2 optical 2 electricity, 4 light 2 electricity, 8 light 2 electricity and other photoelectric switches. 4 light 2 electricity means 4 optical fiber input ports and 2 RJ45 network port output, which can support 100M and Gigabit networks, suitable for Multiple optical fiber transmission for large enterprises.