What is light cat

Optical modem refers to "optical modem", also known as "single-port optical terminal". It is a three-piece set of optical fiber transmission equipment developed for special user environments; the equipment uses large-scale integrated chips , simple circuit, low power consumption, high reliability, complete alarm status indication and complete network management functions.

#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What is an optical modem?

Optical modem, also known as a single-port optical transceiver or optical modem, is a three-piece set developed for special user environments fiber optic transmission equipment. The device uses large-scale integrated chips with simple circuit, low power consumption, high reliability, complete alarm status indication and complete network management functions.

Optical cat

Optical cat is also called a single-port optical transceiver. It is a product designed for special user environments. It uses a pair of optical fibers to carry out single E1 or single V .35 or single 10BaseT point-to-point optical transmission terminal equipment. As the relay transmission equipment of the local network, this equipment is suitable for the optical fiber terminal transmission equipment of the base station and the leased line equipment. Multi-port optical transceivers are generally called "optical transceivers". Single-port optical transceivers are generally used at the user end and work similarly to the baseband MODEM commonly used for WAN dedicated line (circuit) networking. Optical Modem".

There are E1 optical modems, Ethernet optical modes, and V35 optical transceivers, which are configured with corresponding business interfaces according to customer needs. E1 optical modems transmit E1 signals through optical fibers, and Ethernet optical modes transmit through optical fibers. 2M Ethernet signal, V35 optical modem transmits V35 signal through optical fiber. Optical modem is a device similar to a baseband MODEM (digital modem). The difference from the baseband MODEM is that it is connected to an optical fiber dedicated line and is an optical signal. It is connected to the router after converting the photoelectric signal and the interface protocol. It is a type of wide area network access, which is often referred to as optical fiber access. As long as there is an optical fiber, an optical modem is required to convert the optical signal.

Working Principle

Optical modem equipment adopts large-scale integrated chips, with simple circuit, low power consumption, high reliability, complete alarm status indication and complete Network management function.

Optical modem is a device similar to a baseband modem (digital modem). The difference from the baseband modem is that it is connected to an optical fiber dedicated line, which is an optical signal. It is used for the conversion of photoelectric signals and interface protocol conversion in the WAN. The access router is a WAN access. The photoelectric transceiver uses the conversion of photoelectric signals in the local area network, but only the signal conversion, without the conversion of the interface protocol.

Application scope

Speaking of Ethernet optical modem alone, it is mainly used for distances exceeding 20KM, and requires SDH/PDH, etc. In the case of optical transmission equipment relay. Generally speaking, the speed of the optical modem is packaged on the 2M circuit, so the difference between the optical transceiver of the optical modem is also its speed. The optical modem is 2M, and the optical transceiver is 100M.

General application scenarios:

Customer-Ethernet optical cat-optical cable-E1 optical cat-2M cable-Office SDH optical transceiver-Another office SDH optical transceiver-PDH Optical transceiver-E1 to Ethernet protocol conversion-customer equipment (Ethernet switch or computer, etc.). Of course, there are also V.35 optical cats, V.24 optical cats, RS-232 optical cats, etc.

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