Base-8 MTP / MPO structured cabling solution for 10G / 25G / 40G / 100G

Compared with the base-12 MTP / MPO structured cabling, the base-8 MTP / MPO structured cabling can provide more efficient and economic optical links for 40g qsfp +, 100g qsfp28, 400g qsfp-dd and other optical modules by using only 8 optical fibers, which replaces the base-12 MTP / MPO structured cabling to some extent. This paper mainly introduces the application of structured cabling based on base-8 MTP / MPO.

Application of base-8 MTP / MPO structured cabling:

At present, there are three kinds of transmission links based on base-8 MTP / MPO structured cabling: dual fiber transmission link (10g to 10g), parallel multi fiber transmission link (40g-40g or 100g-100g), dual fiber to parallel multi fiber transmission link (10g-40g or 10g / 25g-100g network upgrade). The following will introduce its application in detail from these three aspects.

Base-8 MTP / MPO structured cabling for 10G

Since the interface of 10G Optical module is LC duplex, dual fiber transmission link is generally used in 10g interconnection. As shown in the figure below, when conducting structured wiring, one end needs to use 8-core MTP / mpo-lc optical fiber jumper and 8-core MTP / MPO optical fiber adapter panel, and the other end needs to use LC duplex optical fiber jumper and 8-core MTP / mpo-lc optical fiber distribution box, and in the middle, 8-core MTP / mpo-lc optical fiber jumper is used to connect the two ends for communication.

Among them, the 8-core MTP / mpo-lc optical fiber jumper and MTP / MPO optical fiber adapter panel at one end can be replaced by LC duplex fiber jumper and 8-core MTP / mpo-lc optical fiber distribution box. Since an 8-core MTP / MPO fiber jumper is connected with an optical fiber connector, the total number of fibers deployed in the middle is a multiple of 8 (such as 8, 16, 32, etc.). The use of MTP / MPO fiber optic patch cords provides a more reliable solution for 10G applications, because the fiber adapter panel and fiber distribution box deployed in the middle will be installed in the cable management frame or fiber distribution box, which can effectively avoid the damage caused by extrusion or excessive bending of the optical fiber jumper. At the same time, using the structured wiring in this way, it is easy to remove the components in the link or add new components. The solution can be regarded as a 2-core to 2-core solution in base-8 MTP / MPO structured cabling.

Base-8 MTP / MPO structured cabling for 40g / 100g

At present, there are mainly two solutions for parallel multi fiber transmission link: the first scheme is suitable for 40g-40g 8-core optical fiber connection scheme (4-core transmission and 4-core receiving); the second is suitable for 100g-100g 20 core to 20 core optical fiber connection scheme (10 core transmission and 10 core receiving) or 24 core to 24 core optical fiber connection scheme (12 core transmission and 12 core receiving).

8-core to 8-core fiber connection for 40g-40g

The 8-core to 8-core optical fiber connection scheme is the simplest application scheme of base-8 MTP / MPO structured cabling. The 8-core MTP / MPO optical jumper is directly used to connect the qsfp + optical modules at both ends (such as 40gbase-sr4). However, this scheme is more suitable for short-distance applications, such as the interconnection between point-to-point racks or switchers in the cabinet.

Base-8 MTP / MPO structured cabling for 10g-40g or 10g / 25g-100g network upgrade

There are two solutions for dual fiber to parallel multi fiber transmission link: the first is the 2-core to 8-core fiber connection scheme for 10g-40g and 25g-100g network upgrading, and the second is 2-core to 20 core optical fiber connection scheme for 10g-100g network upgrade.

How far will base-8 MTP / MPO structured cabling go?

To sum up, there are different 8-core MTP / MPO routing solutions in dual fiber, parallel multi fiber and dual fiber to parallel multi fiber transmission links. Based on the base-8 MTP / MPO structured cabling, the cabling scheme is simplified without a large number of fiber deployment, which makes the data center with high speed and simple wiring at the same time. At the same time, it can effectively improve the network efficiency and reduce the deployment cost of base-12 architecture to base-8 architecture by using multiple intermediate devices (such as fiber adapter panel or fiber distribution box). In addition, the 2-core to 8-core or 2-to-20-core connection scheme based on base-8 MTP / MPO structured cabling can provide higher flexibility for 10G / 40g / 100g networks, and effectively solve the problem of equipment compatibility.