MT-MT is a crucial component in optical modules, mainly used for parallel optical signal transmission. Here is an introduction:
Definition and Function
MT-MT is a type of optical fiber jumper that uses MT (Mechanical Transfer) connectors at both ends. It is primarily employed in optical modules with parallel optical technology, such as QSFP modules, to connect internal optical lenses with external ports, meeting the signal transmission requirements of optical modules. Its main function is to enable high-density, low-loss parallel optical signal transmission, ensuring the stable operation of optical communication systems.
Design and Structure
Connector Type: The MT connector is a high-precision connector with a rectangular cross-section. It has multiple V-grooves inside to fix optical fibers, ensuring the precise alignment of optical fibers. The MT-MT jumper uses two MT connectors, which can be male-female or male-male combinations according to specific application requirements.
Fiber Type: It can support various fiber types, including multimode fibers such as OM2, OM3, OM4, OM5, and single-mode fibers such as OS1 and OS2.
Length and Tolerance: The length of the MT-MT jumper is precisely controlled, usually within a range of 20-50 mm, with a length tolerance of ±0.15 mm, to meet the space limitations inside optical modules.
Performance Characteristics
Insertion Loss: The insertion loss of MT-MT jumpers is relatively low. For multimode fibers, the typical insertion loss is 0.2 dB, and the maximum is 0.60 dB. For single-mode fibers, the insertion loss is usually ≤0.5 dB.
Return Loss: The return loss of multimode MT-MT jumpers is generally >20 dB (flat polish), and that of single-mode MT-MT jumpers can reach ≥55 dB.
Mechanical Stability: It has good mechanical stability, capable of withstanding a certain number of insertions and extractions, usually up to 200 times, without significant degradation in performance. It can also operate stably in an environment with a temperature range of -40°C to +85°C.
Applications
MT-MT jumpers are widely used in various types of parallel transmission optical transceiver modules, such as QSFP, QSFP+, QSFP28, 100G PSM4, QSFP-DD, Micro, OSFP, CXP, CFP, and CDFP. They play an important role in high-speed optical communication networks, data centers, and other fields, supporting data transmission rates of 40G (4x10G), 100G (4x25G), 4x32G, 200G (8x25G), 800G (8x100G), etc.
