The optical modules we usually use are generally LC interfaces or MPO interfaces. Optical modules with different interfaces need to be connected with fiber patch cables of corresponding interfaces. LC interfaces are found in optical transcievers of all speeds, while MPO interfaces are usually found in optical modules of high speeds.
MPO/MTP connector is one of the MT connectors. It is a multi-core multi-channel plug-in connector. The MT ferrules use two guide holes with a diameter of 0.7mm on the left and right of the ferrule end face and guide pins (also called PIN) for precise fiber connection. There are many types of MPO fiber jumper, which can be distinguished by the number of fiber cores, male and female heads, fiber polarity, etc. Today we are going to talk about the difference between male and female heads in MPO fiber patch cable.
MTP MPO fiber patch cable includes optical fiber, sheath, coupling assembly, metal ring, pin (PIN), dust plug, etc., as shown in the figure below, where the pin part is divided into male and female types.

The male connector has two PINs, while the female connector does not. The connection between MTP fiber connector is precisely aligned through the PINs, and the two MTP optical connectors connected to each other must be one male and one female. (F is female, M is male).

The MPO interface in the 40G/100G SR4 multimode parallel optical module usually uses a MPO male connector, so you need to insert an MPO female fiber jumper to connect, and the male and female must be plugged in tightly. For example, a 12-core MPO female multimode OM3/OM4 jumper jumper with polarity B.
In addition, the number of cores of the MPO fiber termination must match the number of transmission channels of the optical module, and the number of cores of the MPO patch cord cannot be less than the number of transmission channels of the optical module.
Yingda is a national high-tech enterprise focusing on the research and development, manufacturing, sales and service of passive basic optical communication components. The company’s main products are: optical fiber connectors (high-density optical connectors for data centers), wavelength division multiplexers, optical splitters and other cable management passive devices and fiber optic equipment which are widely used in fiber-to-the-home, AI cloud computing, big data Internet of Things, 5G mobile communications, Internet data centers, national defense communications and other fields.