Both the fiber jumper and the fiber module have single-mode/multi-mode, and if they are mismatched in use, one of the parameters of the optical module is incorrect. So how do fiber optic patch cords and optical modules work together? Today we will share relevant knowledge for everyone, hoping to take less detours in the future! What is the difference between a single mode fiber module and a multimode fiber module? The single mode fiber module has a working wavelength of 1310 nm and 1550 nm and a transmission distance of up to 160 KM. It is commonly used in metropolitan networks with relatively long distances and relatively high transmission rates. The multimode fiber module has an operating wavelength of 850 nm and a transmission distance of only 2 KM. Used in short distance transmission.
 
What is the difference between single mode fiber and multimode fiber?
 
Single-mode fiber transmission bandwidth, long transmission distance, high cost; small core diameter, usually 9/125um; small dispersion, only one mode transmission. Single-mode fiber enables direct transmission of fiber to the center. It is generally used for long-distance data transmission. Multimode fiber has low transmission speed and short distance, but its cost is relatively low. It has a larger diameter, usually 50 or 62.5 μm. Diameter; large dispersion, allowing transmission in hundreds of modes. Optical signals in multimode fibers propagate through multiple paths, so multimode fibers are often used for short-distance data transmission.
If your computer room is all single-mode optical modules, it is recommended that you replace them with multi-mode optical modules. You cannot mix single-mode and multi-mode, because the core diameters of single-mode fiber and multimode fiber are very different. Will cause the insertion loss to be too large when the two match.