MPO/MTP" title="MPO/MTP">MPO/MTP" title="MPO/MTP">MPO/MTPHigh density optical fiber pre connection system is mainly used in three areas: the application of high density data center environment, fiber to the building of the application in optical splitter, 40G, 100G, SFP, SFP+ connected applications such as optical transceiver equipment inside. This paper focuses on why the data center uses MPO/MTP high density optical fiber pre connection system and how to choose the high density optical fiber pre connection system.
MPO/MTP "title=" MPO/MTP ">MPO/MTP" title= "MPO/MTP" >MPO/MTP high density optical fiber pre connection system is mainly used in three areas: the application of high density data center environment, fiber to the building of the application in optical splitter, 40G, 100G, SFP, SFP+ optical transceiver connected by internal. This paper focuses on why the data center uses MPO/MTP high density optical fiber pre connection system and how to choose the high density optical fiber pre connection system.
It is necessary to make a brief introduction of MPO/MTP on the occasion of the use of MPO/MTP high density optical fiber pre connection system. In the field of communication, data transmission, the development of optical fiber connector than the copper rich joint development. According to incomplete statistics, so far, the development of the fiber optic connector up to hundreds of varieties, but really reach a wide range of use of the more than and 10. Throughout its development, there are two distinct stages of development: the first stage: in order to save space, to the direction of miniaturization, fiber optic connectors from the traditional FC, ST, SC, LC, MTRJ, E2000.
The second stage: not only to save space, but also to meet the core requirements of the use of LC from MTRJ to E2000, fiber optic connectors, MU, evolution of MTP/MPO, now a MTP/MPO multi core joint can meet the 2 core, 4 core, 8 core, 12 core, 24 core, 72 core requirements up to now.

 The second stage of the benefits of this development is obvious, look at the 40G, 100G fiber optic network transmission specification requirements will know, multi-core transmission, that is, 8 core or core. So MPO/MTP is able to meet the requirements of high-speed network applications in small space. However, the construction of the engineers on the site has also brought great challenges, and even unable to complete the task. Now, of course, there is a good alternative, that is, the production of pre connection system products factory.
       The application of MPO/MTP optical fiber pre connection system in the data center is also a matter of the past few years, but also the most important application of MPO/MTP pre connection system in china. The reason is not as good as imagined, in fact, is an inevitable choice. First reason: data center space is always not enough. Like the Beijing subway built six months, the traffic is full, which is actually a limited resources and unlimited demand for a pair of contradictions, this phenomenon is manifested in various areas of China's current. To solve the lack of space can be used to increase the space or improve the utilization of space, in a well designed data center to increase the space is not realistic, improve space utilization is to increase the density. As the two major data center: copper cabling system, cable wiring system, the system can also be used in copper high density, but the high density of space saving is limited. Because not only to meet the high frequency balance and greater line; electrical transmission performance of high frequency cable is not easy to meet, but also to solve a series of problems in multi frequency electronic signal transmission cable core. Of course, in order to save convenient on-site installation of copper pre connected system, this is another topic, regardless of this. So in the same space to get more transmission bandwidth, switching to optical cable transmission is an inevitable choice, but this does not mean that the need for high density optical fiber pre connection system.

The second reason is the result and improve network speed, fiber, dual core fiber can support hundreds of megabytes, and application of Gigabit Gigabit, but do not use special encoding and protocol, the two core fiber supports 40G and 100G is difficult. Fortunately, more than 200 experts from the IEEE working group have come up with a standard to support such applications after years of effort, which is now known as the IEEE802.3ba specification. Read the 457 page specification, in which the definition of optical fiber cable transmission is still easy to find, see figure below. We can see a single channel for 4 core or 10 core fiber, so the normal 40G and 100G fiber optic network communication is the core fiber and the 20 core fiber. This poses a challenge to the traditional data communication of the dual core optical fiber transmission, that is, the need to use high-density multi-core fiber, but even if it does not necessarily have to use high-density multi-core fiber optic connection system.

The second reason is the result and improve network speed, fiber, dual core fiber can support hundreds of megabytes, and application of Gigabit Gigabit, but do not use special encoding and protocol, the two core fiber supports 40G and 100G is difficult. Fortunately, more than 200 experts from the IEEE working group have come up with a standard to support such applications after years of effort, which is now known as the IEEE802.3ba specification. Read the 457 page specification, in which the definition of optical fiber cable transmission is still easy to find, see figure below. We can see a single channel for 4 core or 10 core fiber, so the normal 40G and 100G fiber optic network communication is the core fiber and the 20 core fiber. This poses a challenge to the traditional data communication of the dual core optical fiber transmission, that is, the need to use high-density multi-core fiber, but even if it does not necessarily have to use high-density multi-core fiber optic connection system.
      Let's look at the third reasons, the reason is more realistic, namely the original familiar fiber optic connectors, such as SC, LC in terms of the number and size of the core can't meet the definition of the MDI high speed network standard core requirements. In addition to the completion of the work in the field of such a single core multi-core connection is very difficult, because the core of a failure means that the entire root failure. At the same time, it is difficult to get the full performance of the security and Hengnan to meet the requirements of performance consistency. So it is an inevitable choice to transfer such complicated work to the factory with special assembly line and various equipment. Although this to the traditional data center challenges some wiring system, mainly in the design stage and the scene calculation stage, need to determine the position of each cabinet and to calculate the exact length of each Trunk cable, so that the factory for production. But this work is not enough for this kind of high performance fiber optic cabling system to meet the high speed of the network, as well as the possible uncertainty of the performance of the site construction. In fact, this is a chance to change our traditional mode of thinking of the wiring. In fact, many industry products can be prefabricated in the factory. Lego in the toy industry, the furniture industry, IKEA may have long understood the idea.
       The fourth reason, which is the system integrator of relief, but also the user satisfaction. Because of the high density of the pre connection system, it can greatly reduce the installation time of the site, but also greatly reduce the impact of the construction site on the performance and the probability of performance uncertainty. Not only greatly reduces the difficulty of construction and performance is more secure, but also greatly reduce the wiring system installation space. So it is not surprising that it has been widely used.

 So how to do a MPO/MTP high density fiber pre connection system project? Of course, to choose high-performance. But over the years I have been emphasizing the performance of a wiring project depends on four factors: the number of preliminary design, product performance, installation process and project environment. In a traditional non connection wiring system project, the four elements of the final performance of the project can be accounted for by the impact of each of the 25%. However, in the pre connection system, this ratio will change a lot, due to a large number of on-site installation of the project, the end of the transfer of work to the pre connection products. At the same time the length of the design phase of the results of the calculation will be implemented in the factory, so that the performance of pre connection products will account for more than 50% of the final performance of the project is not too much. Such a situation will make the work in the pre connection factory will become more critical.

So how is the performance of the MTP/MPO high density optical fiber pre - connection system guaranteed in a manufacturing facility? What is the difference between the normal fiber jumper, the assembly and the assembly of the assembly line?
First, the factory must comply with the ISO9000 and a series of quality management system certification, and production process and product performance but also accord with the industry's most comprehensive and most stringent fiber connection component production standards, such as GR326 standard. Now the factory can produce fiber jumper but rarely meet the eye everywhere through the GR326 standard, the company established Telcordia certification, Telcordia is the predecessor of Baer Communication Lab, is committed to the development of American Standard, including network architecture products written US/ global standard. Such GR326. Secondly, to understand that MTP/MPO pre connected system products, whether it is Truck or polar module, whether the process is Hardness or MPO jumper than conventional SC and LC joints to be complex and difficult, not a MPO joint processing 12 core is just a simple superposition of the workload and difficulty of processing 12 simplex SC or LC simplex the. No advanced equipment, exquisite workmanship and years of experience and trained personnel are not complete. The requirements for consistency and repeatability are extremely demanding. A simple example of fiber ferrule height requirements MPO/MTP joint is a 12 core of the thousands of nm, the more difficult is to ensure that the difference is less than the height of the hundreds of nm, which is the consistency of the requirements, it is 40G and 100G fiber network on the physical link layer properties. Ask to.
The following summary, this paper discusses the causes of data center using MPO/MTP high density optical fiber pre connection system, and puts forward some suggestions on the new system choice, hope to the data center and users engaged in optical fiber pre connection system of peer help.

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