What is the IL Value of Ultra Low Loss MPO Fiber Optic Cable?

With the wide application of FTTH, the requirements for data transmission capabilityand speed have become more and more important in optical fiber communications,which has also led to high requirements for high-density, low-loss optical fiberconnectors.

In the previous article, we introduced what are insertion loss and return loss? Thesetwo parameters are the most important indicators of fiber optic connectors. Thethree factors that affect fiber connection loss are the lateral shift of the fiber core,fiber tilt and gap. Among them, lateral offset is the most important factor.

For MPO connectors, the factors that affect the lateral offset are the eccentricity ofthe fiber hole, the gap between the fiber hole and the fiber, and the gap between thepositioning pin hole and the positioning pin. By determining the dimensionaltolerances required for MT sleeves, optical fibers and positioning pins, low losses canbe achieved. This requires MPO connectors to have low-loss and high-reliabilityperformance during the grinding process, polishing process, and manufacturingprocess of experimental testing.

So what is low loss? First, let's take a look at the standard typical insertion loss valuesof MPO fiber connectors.

Optical performance index of MPO single-mode fiber connector－ The maximum insertion loss of any plug through the standard adapter andstandard plug ≤0.75dB (including repeatability); return loss>30dB (MPO/PC),>50dB(MPO/APC)

－ The maximum insertion loss of two plugs connected arbitrarily through theadapter ≤1dB; return loss>20dB (MPO/PC),>40dB

Optical performance index of MPO multimode fiber connector plug－ The maximum insertion loss of any plug through the standard adapter andstandard plug ≤0.35dB (including repeatability)－ The maximum insertion loss of two plugs connected arbitrarily through theadapter ≤1dB

Although the IEC standard specifies the maximum insertion loss of the connector, thetypical insertion loss of most manufacturers' connectors will be below the standardvalue. At present, the insertion loss index of 8-core or 12-core multimode MPOconnectors in the industry is generally standard loss 0.5dB, and low loss is less than0.35dB.

MPO/MTP fiber optic connectors are an important part of high-density opticalinterconnect products in data centers. Today, data center cabling also requireshigher-performance, higher-density MPO/MTP fiber optic cables. By improving theconnector technology and manufacturing technology, HYC Co., Ltd successfullyreduced the loss of the MPO connector SM single-mode 12-core to less than 0.25dB,which is 28% lower than the industry low loss value of 0.35dB; The loss of SMsingle-mode 24 core is reduced to 0.35dB, which is far below the industry standardand the typical loss value of MPO connectors provided by other manufacturers. Itprovides high-quality MPO fiber optic cables for data center 400G networkconstruction.

About HYC Co., LtdHYC can provide customized high-quality MPO/MTP optical fiber cable according tocustomer needs. Founded in 2000, HYC has more than 20 years of OEM/ODMmanufacturing experience in optical communication devices. The main productsinclude high-density optical connectivity, PLC optical splitters, WDM wavelengthdivision multiplexers, MEMS optical switches and other products, which are widely

used in FTTx, telecommunications, 5G networks, data centers and other fields.www.hyc-system.com