Optical fiber is widely used in long-distance transmission in weak current systems. Let's take a look at the difference between single-mode optical fiber and multi-mode optical fiber!
The difference between single mode fiber and multimode fiber
1. Different core diameters
From the appearance point of view, the core diameter of single-mode fiber is generally 5-10um, and the core diameter of multimode fiber is 50um, 62.5um.
2. The transmission distance and bandwidth are different
Multimode fiber has a transmission distance of 2KM at a rate of 155M, while single-mode fiber can transmit 10-100KM. The commonly used bandwidth of multimode fiber is generally 1G and 10G, while the bandwidth of single-mode fiber is larger and commonly used are 1G, 10G, 40G .
3. Pigtails have different colors
The pigtails and jumpers of multimode fiber splicing are generally orange-red, and the pigtails and jumpers of single-mode fibers are yellow.
Multimode fiber and single-mode fiber are mainly different in core diameter, transmission distance, bandwidth and pigtail color. After mastering these basic knowledge, we can help us better select the transmission link in the weak current system.
Common fault types of fiber optic jumpers
Fiber insulation is too poor
If the fiber optic cable is not insulated during laying, the splice box can easily enter the water or be in a wet state. The long-term stress corrosion and static fatigue of the line will greatly reduce the transmission strength of the optical fiber jumper. In severe cases, it can appear. In the event of a cable break.
Influence of Lightning on Optical Cable Fault
The internal components of the cable are all metallic conductors. If the power line is short-circuited or lightning strikes a metal part, a strong current will be generated to damage the cable equipment.
Line connector failure Fiber optic cable failure
In the place where the line connector is most prone to failure, this is because the optical cable structure at the joint has no protection or the protection has been significantly weakened, so the protection work can only rely on the splice box, which leads to a high probability of failure.
Influence of External Force on Optical Cable Fault
Line faults are usually caused by external forces. Since many communication optical cable lines are laid outdoors, the general embedded standard goes deep into the ground, so it is impossible to effectively avoid the damage of many external factors to the optical cable lines. Such as digging fiber optic cables during road construction.
The above four types are the most common types of fiber optic jumper failures. This professional answer hopes to be useful to you.
