The maximum tolerable fiber attenuation that a 10G network can withstand is 2.55dB. If the overall attenuation of the optical fiber link exceeds this value, the 10G network will not work, or it will automatically be reduced to a Gigabit network.
The maximum tolerable fiber attenuation that a 10G network can withstand is 2.55dB. If the overall attenuation of the optical fiber link exceeds this value, the 10G network will not work, or it will automatically be reduced to a Gigabit network, therefore, when designing a 10 Gigabit optical fiber link, ensure that the entire link meets the required attenuation requirements.
The maximum attenuation of ordinary MPO fiber is 1dB. According to the attenuation of 3dB per kilometer of multimode fiber optic cable, the data center link generally does not exceed 100 meters, so the loss on the fiber itself will not exceed 0.3dB.
A complete MPO optical fiber link contains two module boxes and a trunk cable. The total attenuation can be calculated: the loss of the optical fiber box is (2x1dB) plus the loss of the optical fiber itself 0.3dB, we get The link loss is 2.3dB, which can support 10G network, but once the link is increased by a jumper or designed as a more complicated wiring structure, what will be the problem?
If you add one jumper connection and three jumper connection, the link loss will become 3x1dB, plus 0.3dB, and the total link loss will reach 3.3dB, which exceeds the maximum attenuation of the 10G Ethernet link demand. Therefore, when some complex structures are added, such as devices that need to be interconnected in the distribution area, or directly connected to Layer 3 devices across Layer 2 devices, this link will not be supported.
HTF launched the MPO ultra-low loss optical fiber cassette, optimized the optical fiber connector and coupler, and reduced the loss of the entire module box to 0.35dB.
2×0.35dB plus 1dB, the calculated link loss of the two module boxes is only 1dB, and there is a margin of 1.55dB for the 2.55dB loss requirement of the 10G optical fiber network. According to this calculation method, the maximum number of hops that a 10-Gigabit network can support reaches 6 connections, and there is still a margin of 0.15dB. This low-loss optimized fiber optic box can help data centers apply higher-speed fiber optic networks and more complex structures.
In addition to the perfect support for 10G networks, the MPO ultra-low fiber loss system can also support 40G and 100G Ethernet applications on a 300-meter-long 10-Gigabit channel, and can support up to 6 module boxes connected at 100 meters and 150 meters. On 40G and 100G optical fiber network channels, the connection of 4 module cassette can be supported.
