What is MPO MTP Connectors
MPO (Multi fiber Push On) patch cord is a high-density fiber optic transmission patch cable composed of connectors and cables. Fiber MPO connector is one of the MT series connectors, which is a multi-core and multi-channel plug-in connector. The MT series plugs are precisely connected to guide pins (also known as PIN pins) through two guide holes with a diameter of 0.7mm on the left and right sides of the plug end face.
MPO Connector Features
The main features of MTP MPO connector fiber compared to other fiber optic connectors are compact design and a large number of fiber cores. Fiber MPO connector have the same size as SC connector, but can accommodate 12 or 24 fibers, so MPO can greatly save cabinet wiring space. At present, MPO MTP connectors are available in mpo 8 connector, mpo 16 connector, mpo 24 connector, MTP optical connector 48 core, 72 core, and 144 core designs, with the most common being 12 and 24 core MPO patch cable. 40G MPO-MPO fiber optic cable, generally using 12 core MPO multimode ferrule; 100G MPO MPO fiber patch cable generally use 24 core MPO ferrule.
MPO To MPO Cable Structure
MPO connectors include optical fibers, sheaths, coupling components, metal rings, pins, dust caps, etc., and the pin part is divided into two forms: male and female. The male connector has two PIN pins, while the female connector does not. The connection between MPO connectors is precisely aligned through PIN pins. When docking the connector, the spring installed at the tail of the ferrule will provide a pushing force to the ferrule, locking it with the adapter. There is a “key” on one side of the MTP connector body, which is divided into “concave convex” and used to limit the relative position of the connector, such as P1, P2, etc. There is a mark called “white dot” on the body side of the connector, used to specify the insertion side of the connector.
Generally, an optical link requires two optical fibers to complete the entire transmission process, and polarity refers to the interconnection matching between the transmitting end (Tx) and the receiving end (Rx) at both ends of the optical link.
MPO Cable Types (Three wire sequences)
MTP Cable Type A (straight through type):
The arrangement positions of the fiber cores at both ends of the patch cable are the same, that is, 1 at one end corresponds to 1 at the other end, and 12 at one end corresponds to 12 at the other end. The orientation of the keys on both ends is opposite, with key up corresponding to key down.
MPO Cable Type B (interleaved):
The arrangement of fiber cores at both ends of the jumper is opposite, with one end’s 1 corresponding to the other end’s 12, and one end’s 12 corresponding to the other end’s 1. The orientation of the key on both ends is the same, that is, key up corresponds to key up, and key down corresponds to key down.
MPO/MTP Type C (Pair Interlocking Type):
The MPO patch cord of Type C is a pair of adjacent fiber cores that intersect, where one end of core 1 corresponds to the other end of core 2, and one end of core 12 is 11 at the other end. The orientation of the keys on both ends is also opposite, with key up corresponding to key down.
Three different polarity connection methods use different types of MPO backbone cables. However, all methods require the use of duplex patchcords to form fiber optic links. The TIA standard also defines two different types of LC or SC duplex fiber patch cords to complete end-to-end duplex connections: A-A type (cross type) jumpers and A-B type (straight through type) jumpers.
Compared with other fiber optic connectors, MTP MPO connector have the characteristics of small size, high precision, and high density. Its appearance greatly improves the popularity of optical networks and reduces production costs. Therefore, MPO fiber jumpers are widely used in high-density integrated fiber optic line environments during the wiring process, such as FTTX and 40G 100G SFP, SFP+ and other transceiver modules or devices for internal and external connection applications.
