MPO (Multi-fiber Push On) fiber optic patch cord is composed of fiber connectors and optical cables, and is a high-density optical fiber transmission patch cord.
MPO connector is one of the MT series connectors, it is a multi-core multi-channel plug-in connector.The ferrules of the MT series use two guide holes with a diameter of 0.7mm on the end face of the ferrule and the guide pins (also called PIN pins) for precise connection. Compared with other connectors, MPO connectors are mainly characterized by compact design and large number of fiber cores.MPO connectors are the same size as SC connectors but hold 12 or 24fibers,Therefore, MPO can greatly save cabinet wiring space.
At present, MPO connectors have 8-core, 12-core, 24-core, 48-core, 72-core, and 144-core design, among which 12 core and 24 core MPO patch cables are more common. 40G MPO-MPO fiber patch cord, generally using 12-core MPO multimode ferrule; 100G MPO-MPO fiber jumpers generally use 24-core MPO ferrules.
MPO fiber optic connectors include optical fibers, sheaths, coupling components, metal rings, pins, dust caps, etc. And the pin part is divided into male and female.The male connector has two PIN pins, while the female connector does not.The connections between the MPO connectors are precisely aligned via PIN pins. When mating the connector, the spring installed at the end of the ferrule will provide a push force on the ferrule to lock it with the MPO adapter. There is a "key" on one side of the connector body,there are "concave and convex" points,Used to limit the relative position of the connector, i.e. P1, P2, etc. There is a marking called "white dot" on the body side of the connector to designate the insertion side of the connector.
Generally, an optical link needs two optical fibers to complete the entire transmission process, and the polarity is the interconnection matching between the transmitting end (Tx) and the receiving end (Rx) at both ends of the optical fiber link.
MPO polarity classification for three wire sequences:
Type A (straight-through): The cores at both ends of the MPO jumper are arranged in the same position, 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 Key keys at both ends is opposite, and key up corresponds to key down.
Type B (interleaved): The positions of the cores at both ends of the jumper are opposite, that is, 1 at one end corresponds to 12 at the other end, and 12 at one end corresponds to 1 at the other end. The key orientations of the keys at both ends are the same, that is, key up corresponds to key up, and key down corresponds to key down.
Type C (interleaved in pairs): Type C MPO jumpers are a pair of adjacent cores crossed, that is, core 1 at one end corresponds to 2 at the other end, and core 12 at one end is 11 at the other end. The Key keys at both ends are also oriented in the opposite direction, and key up corresponds to key down.
Three Polarity Connections Different polarity methods use different kinds of MPO trunk cables.However, all methods utilize duplex patch cords to form fiber optic links.The TIA standard also defines two different types of LC or SC duplex fiber optic patch cords to complete end-to-end duplex connections:A-A (crossover) patch cords and A-B (straight-through) patch cords.
Compared with other optical fiber connectors, MPO connectors have the characteristics of small size, high precision and high density. Its appearance has greatly improved the popularity of optical networks and reduced production costs.
Therefore, MPO jumpers are widely used in environments that require high-density integrated optical fiber lines in the wiring process, such as FTTX and 40/100GSFP, SFP+ and other transceiver modules or connection applications inside and outside the device.
FOCC FIBER is a national high-tech enterprise focusing on the research and development, manufacturing, sales and service of passive basic components for optical communication. The company's main products are: optical fiber connectors (high-density optical connectors for data centers), wavelength division multiplexers, optical splitters and other three core optical passive basic components, which are widely used in fiber-to-the-home, 4G mobile communication, Internet data centers, defense communications and other fields.