25G and 40G Ethernet 

The data center is migrating towards 25G and 100G across both enterprises and cloud providers with the demand for high-speed data communications,which means 25G optical transceiver module meet the needs of future network upgrades, Today this article will put emphasis on 25G and 40G Ethernet.

25G Ethernet optical transceiver module & cable solution

25G Ethernet is available on the market using the SFP28 and QSFP28 transceiver form factors. Direct attach SFP28-to-SFP28 copper cables in 1-, 2-, 3- and 5-meter lengths are available from several manufacturers,25GBASE-SR SFP28 optical transceiver module is a working wavelength of 850nm 25G optical module,, this optical transceiver module transmitter is a VCSEL, Vertical Cavity Surface Emitting Laser,therefore , it need to be used with 50 / 125μm OM3 / OM4 multimode fiber.

For interconnection applications in data center switches, the use of SFP28 high-speed cables is a more common and cost-effective solution. In addition, QSFP28 to 4xSFP28 high-speed cable is 100G switch and 25G switch short-distance connection of the ideal solution.

40G Ethernet optical transceiver module & cable solution

40G Ethernet is available on the market using QSFP form factor and offers a wide variety of high-density and low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider applications.

For data center of the 40G Ethernet cabling, the use of OM3 / OM4 cable is a more respected cabling solution, because this wiring is more flexible than the copper cabling solution configuration than single-mode fiber optic cable solutions Lower cost.

In addition, duplex LC connector is for traditional network cabling, the MPO / MTP connector is the common connector for 40G Ethernet cabling

Comparison Between 25G and 40G Ethernet

Right now, network vendors are positioning 25G is mainly used for switch-to-server applications and 40G is for switch-to-switch applications for example, Cisco doesn’t offer a 25G fiber transceiver module, and HPE price is higher than 40G and 100G transceivers! In other words, It might need time to realize 25G for switch-to-switch.

25G use less power consumption and produce less heat than 40G due to High performance 25GbE chips with single-lane 25G serializer-deserializer technology.

25G Port and system density is higher than 40G,it can save capital expenditure and operating expenses.In addition ,25G Ethernet is 2.5 times the performance of 10G Ethernet and Conforms to the 100G Ethernet standard.

Summary

25G Ethernet can be used for data centers, it seems that 25G Ethernet have a fantanstic future, but 40G is a safe choice due to its mature market adoption on the maket, in campus and access networks with their long fiber runs and low bandwidth needs, there is much less pressure to move from 10G connectivity. 40G is available today, 25G connectivity will be a cheaper alternative.

If you are interested in UTOPTICAL full range of optical transceivers & cables ,please visit :UTOPTICAL Online Store.