How to connect three optical fiber lines
With the popularity of optical fiber networks, more and more users are beginning to pay attention to the connection methods of optical fibers. Optical fiber usually consists of three wires, namelyTransmitting line (TX), receiving line (RX) and ground line (GND). Correctly connecting these three wires is the key to ensuring stable operation of fiber optic communications. This article will introduce in detail the connection method of three optical fiber lines, and attach structured data for reference.
1. Basic introduction to three optical fiber lines

The three wires of optical fiber are usually used to transmit optical signals and their functions are as follows:
| line name | Function | Color identification (common) |
|---|---|---|
| Transmit line (TX) | used to send optical signals | yellow or white |
| Receive line (RX) | used to receive optical signals | green or blue |
| Ground wire (GND) | Provide electrical ground | black or brown |
2. Connection steps of three optical fiber lines
When connecting three optical fiber lines, you need to follow the following steps:
1.Confirm line sequence: First check the three lines of the optical fiber to ensure that TX, RX and GND are clearly marked. If the color identification is unclear, use a multimeter or fiber optic tester to confirm.
2.Strip fiber optic jacket: Use fiber optic wire strippers to carefully peel off the outer sheath to expose the inner fiber core and sheath. Be careful not to damage the fiber core.
3.Clean fiber core: Clean the surface of the fiber core with a lint-free cloth and alcohol to avoid dust or oil from affecting signal transmission.
4.Connect fiber optic interface: Connect the TX line to the transmit port of the device, the RX line to the receive port, and the GND line to the ground port. Make sure the connector is plugged in tightly to avoid loosening.
5.test signal: After the connection is completed, use a fiber tester or network test tool to check whether the signal is transmitted normally.
3. Common problems and solutions
When connecting three optical fiber lines, you may encounter the following problems:
| question | Possible reasons | Solution |
|---|---|---|
| Signal transmission is unstable | Fiber core contamination or loose interface | Clean the fiber core and re-tighten the interface |
| No signal | The wire sequence is reversed or the fiber core is broken. | Check the wire sequence and replace the damaged fiber core |
| Device not recognized | Poor grounding or unstable voltage | Check grounding and ensure power supply is stable |
4. Safety precautions for fiber optic connections
1.Avoid looking directly at fiber optic light sources: The optical signal transmitted by optical fiber may cause damage to the eyes. Do not look directly at the light source during operation.
2.Use anti-static tools: Wear an anti-static bracelet when operating optical fibers to prevent static electricity from damaging the fiber core.
3.Handle with care: The fiber core is very fragile, avoid bending or squeezing.
5. Summary
The correct connection of the three optical fiber lines is the basis for ensuring stable network communication. Through the introduction of this article, I believe you have mastered the connection method of three optical fiber lines and the solutions to common problems. If you encounter other problems during operation, it is recommended to consult professional technicians or consult relevant technical documents.
With the development of 5G and IoT technology, the application of optical fiber will become more widespread. Mastering fiber optic connection technology will bring great convenience to your network deployment and maintenance.
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