October 24, 2021

The difference between 100M optical fiber transceiver and Gigabit optical fiber transceiver

The 100M optical fiber transceiver (also known as the 100M photoelectric converter) is a fast Ethernet converter. The optical fiber transceiver is fully compatible with IEEE802.3, IEEE802.3u, and IEEE802.1d standards. It supports three working modes: full duplex, half duplex, and adaptive.

Gigabit optical fiber transceiver (also known as photoelectric converter) is a fast Ethernet, its data transmission rate is up to 1Gbps, still uses CSMA/CD access control mechanism and is compatible with existing Ethernet, with the support of the wiring system , Can smoothly upgrade the original fast Ethernet and can fully protect the user’s original investment.

Gigabit network technology has become the preferred technology for new networks and reconstruction. Although the performance requirements of the integrated wiring system are also improved, it provides convenience for users’ use and future upgrades.

The standard of Gigabit Ethernet is formulated by IEEE 802.3, and there are two wiring standards of 802.3z and 802.3ab. Among them, 802.3ab is a wiring standard based on twisted pair, using 4 pairs of Category 5 UTP, and the maximum transmission distance is 100m. And 802.3z is a standard based on Fibre Channel, and there are three types of media used:

a) 1000Base-LX specification: This specification is the parameters of multi-mode and single-mode fiber used in long distances. Among them, the transmission distance of multi-mode fiber is 300 (550 meters, and the transmission distance of single-mode fiber is 3000 meters. The specification requires the use of relatively expensive long-wave laser transceivers.

b) 1000Base-SX specification: This specification is the parameters of multimode fiber used in short distances. It uses multimode fiber and low-cost shortwave CD (compact disc) or VCSEL lasers, and its transmission distance is 300 (550 meters).

c) 1000BASE-CX specification: Use short-distance shielded twisted pair STP with a transmission distance of 25m, which is mainly used to connect high-performance servers and high-speed peripherals with short jumper cables in the wiring closet.

Remarks: Gigabit optical converter is a kind of optical signal converter used to convert the electrical signal of computer Gigabit Ethernet into optical signal. It conforms to IEEE802.3z/AB standard; its characteristic is electrical port The signal conforms to 1000Base-T, and it can be self-adapted through straight line/crossover line; it can also be full-duplex/half-duplex mode.

The difference between 100M optical fiber transceiver and Gigabit optical fiber transceiver

At present, more than 100M is used, while Gigabit is rarely used. However, the prices of 100M and Gigabit are gradually approaching. If you look at it from a long-term perspective, it is recommended to use Gigabit fiber optic transceivers.

Gigabit optical fiber transceiver

Gigabit optical fiber transceiver

If there are no special requirements on the current network, even if it is to transmit high-definition video or a large amount of data transmission, a 100M network is sufficient.

100M optical transceivers are cheaper than gigabit optical transceivers, and 100M optical transceivers will also be used in terms of cost. But if the local area network is a gigabit network, the use of gigabit transceivers is much better than a 100M transceiver.

Summary: Fast and gigabit fiber optic transceivers have the same function, they are both used to receive luminous signals, but their bandwidth is different, gigabit speed is faster.

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