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Fully introduce the types, male and female, and polarity classification of MPO/MTP fiber jumpers

Update:09-07-2020
Summary:

Faced with the increasing demand for high-speed, large- […]

Faced with the increasing demand for high-speed, large-capacity optical communication systems, MTP/MPO fiber connectors and fiber jumpers are ideal solutions to meet the high-density wiring requirements of data centers, due to their advantages of large number of cores, small size, high transmission rate, etc. .
MPO fiber jumper is composed of MPO connector and fiber optic cable. MPO connector types are distinguished according to IEC 61754-7 by several factors: core number (Array Number), male-female (Male-Female), polarity (Key), polishing type (PC or APC).
What are the core numbers of MPO?
At present, the factory termination components of MPO connectors can accommodate 6 to 144 optical fibers, of which the 12 and 24 core MPO connectors are more common. According to IEC-61754-7 and EIA/TIA-604-5 (FOCIS 5) specification standards, 12-core optical fibers are usually arranged in a row, which can support one or more rows of optical fibers in the same MPO connector, according to the discharge in the connector The number of cores is divided into one row (12 cores) and multiple rows (24 cores or more). 40G MPO-MPO fiber jumpers generally use 12-core MPO multimode ferrules; 100G MPO-MPO fiber jumpers generally use 24-core MPO ferrules. There are currently 16 single-row fiber array types on the market, which can be divided into multiple rows to form 32 cores or more. The 16/32-core MPO fiber connector will become the best solution for the next-generation 400G network with low latency and ultra-high speed transmission.

   
MPO male and female
MPO fiber optic connectors include optical fibers, jackets, coupling components, metal rings, pins (PIN pins), dust caps, etc. The pin parts are divided into male and female forms. The male connector has two PIN pins, while the female connector does not. The connection between the MPO connectors is precisely aligned through the PIN pin, and the two MPO connectors connected to each other must be a male and a female.
MPO polarity classification:
Type A (straight-through): The cores on both ends of the 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 on both ends is opposite, and key up corresponds to key down.
Type B (interleaved): The arrangement of the cores at both ends of the jumper is 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 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.
Type C (paired interleaved): C-type MPO patch cord is a pair of adjacent core positions crossing, that is, the core 1 at one end corresponds to 2 at the other end, and the core 12 at one end is 11 at the other end. The orientation of the key keys on both ends is also opposite, key up corresponds to key down.
What is MTP?
MTP is "Multi-fiber Termination Push-on", which is developed by US Conec. It has improved attenuation and reflection on standard MPO connectors and has a higher overall performance. From the outside, there is almost no obvious difference between MPO and MTP connectors. In fact, they are fully compatible and match each other.
MPO/MTP optical fiber connectors and optical fiber jumpers provide a simple and easy-to-manage optical fiber wiring solution, which is widely used in FTTH and data centers that require high-density integrated optical fiber lines. It is likely to become a hot demand product for the construction of 5G data centers in the future .

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