The difference between single-mode fiber jumper and multi-mode fiber jumper

Updated on Mon Aug 18 2025

Optical fiber jumpers include single-mode, multi-mode, and other optical fiber jumpers with plastic as the transmission medium; according to the structure of the connector, they can be divided into: FC jumper, SC jumper, ST jumper, LC jumper Wire, MTRJ jumper, MPO jumper, MU jumper, SMA jumper, FDDI jumper, E2000 jumper, DIN4 jumper, D4 jumper and so on. The more common fiber optic jumpers can also be divided into FC-FC, FC-SC, FC-LC, FC-ST, SC-SC, SC-ST, etc.


Single-mode fiber (Single-mode Fiber): Generally, the fiber optic jumper is indicated by yellow, and the connector and protective sleeve are blue; the transmission distance is longer.


Multi-mode Fiber (Multi-mode Fiber): Generally, fiber optic jumpers are represented by orange, and some are represented by gray, and the connectors and protective sleeves are beige or black; the transmission distance is shorter and the distance is shorter.


The transceiver wavelengths of the optical modules at both ends of the fiber jumper must be the same, that is to say, the two ends of the fiber must be optical modules with the same wavelength. The simple way to distinguish is that the colors of the optical modules must be consistent. Generally, the short-wave optical module uses multimode fiber (orange fiber), and the long-wave optical module uses single-mode fiber (yellow fiber) to ensure the accuracy of data transmission.

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Do not excessively bend or loop the optical fiber during use, as this will increase the attenuation of light during transmission.


After using the optical fiber jumper, the optical fiber connector must be protected with a protective sleeve. Dust and oil will damage the coupling of the optical fiber.


If the optical fiber connector is dirty, you can use a cotton swab dipped in alcohol to clean it, otherwise it will affect the communication quality.


1. Before use, the ceramic ferrule and ferrule end face of the optical fiber jumper must be wiped clean with alcohol and absorbent cotton.


2. The minimum bending radius of the optical fiber is not less than 150mm during use.


3. Protect the ferrule and the end face of the ferrule to prevent bruising and pollution, and put on the dust cap in time after disassembly.


4. Do not look directly at the end face of the fiber when the laser signal is being transmitted.


5.In case of man-made or other force majeure damage, the damaged fiber jumper should be replaced in time.


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