Single Mode Fiber and Multi-mode Fiber FAQ

Can single-mode fiber and multi-mode fiber be mixed? Generally, no. The transmission modes of single-mode fiber and multi-mode fiber are different. If the two fibers are mixed or directly connected together, link loss and line jitter will be caused. However, single-mode and multi-mode links can be connected through a single-mode conversion jumper.
Can a multi-mode optical module be used on a single-mode fiber? How about using a single-mode optical module on a multimode fiber? Multi-mode optical modules cannot be used in single-mode optical fibers, which will cause large losses. A single-mode optical module can be used on a multimode fiber, but an optical fiber adapter is used to convert the optical fiber type, for example, by using an optical fiber adapter, the 1000BASE-LX single-mode optical module can operate on a multimode fiber. The optical fiber adapter can also be used to solve the connection problem between single-mode optical modules and multi-mode optical modules.
How to choose between single-mode fiber and multi-mode fiber? The choice of single-mode fiber and multi-mode fiber should be considered according to the actual transmission distance and cost. If the transmission distance is 300-400 meters, multi-mode fiber can be used, if the transmission distance reaches thousands of meters, single-mode fiber is the best choice.
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What is the difference between optical fiber and copper wire
Optical fiber and copper wire are two common data center transmission media, both have anti-interference and good confidentiality, so what is the difference between optical fiber and copper wire? The difference between the two is mainly reflected in the following four aspects:
Transmission distance: Generally speaking, the transmission distance of copper wire does not exceed 100m, while the maximum transmission distance of optical fiber can reach 100km (single-mode fiber), which far exceeds the transmission distance of copper wire.
Transmission rate: At present, the maximum transmission rate of copper wire can reach 40Gbps (such as eight types of network cables, DAC passive copper cables), while the maximum transmission rate of optical fiber can reach 100Gbps (such as OM4 fiber jumper), far exceeding the copper wire.
Maintenance and management: The operations such as making the crystal head of the copper wire and connecting the device port are very simple, while the operations such as cutting and welding of the optical fiber and connecting the device require higher requirements and are more complex.
Price cost: In the case of the same length of optical fiber and copper wire, the price of optical fiber is generally 5 to 6 times the price of copper wire, and the price of optical fiber connector equipment (such as optical fiber coupler, etc.) is also much higher than the price of copper wire, so the price cost of optical fiber is much higher than the price cost of copper wire.
What is the difference between optical fiber and copper wire is mainly discussed through transmission distance, transmission rate, maintenance management, price and cost, and I believe that you can simply distinguish the difference between optical fiber and copper wire after the description above.
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