When buying a single-fiber optical fiber transceiver, the customer service will ask whether it is necessary to pair it. After installing it until half of the link is blocked, and then adjusting both ends, the problem is likely to occur in wavelength pairing. This article explains the wavelength rules of single fiber thoroughly at once, so that both procurement and construction can be implemented accordingly.

Two wavelengths in one fiber

Dual fiber relies on two optical fibers to separate the transmission directions, while single fiber relies on wavelength division multiplexing: one end transmits 1310 nanometers and receives 1550 nanometers, and the other end transmits 1550 nanometers and receives 1310 nanometers. When both ends transmit the same wavelength, they cannot hear each other, and the indicator light naturally does not light up. like100M single mode single fiber one optical one electrical fiber optic transceiverFor this type of model, the A, B or TX/RX wavelength identification on the body label is the pairing identity. The two ends of the dual-fiber model have the same wavelength, so there is no end-identification problem. However, it is also recommended to test the connection before mixing and plugging in different batches of equipment before putting them on the shelf.

Three moments when pairing can go wrong

• The purchase was ordered in two batches. The second batch did not indicate the matching relationship. When the goods arrived, two of the same ends were found.
• The one that broke down on site was replaced with a spare part. The speed model was correct, but the wavelength was the opposite.
• After the label wears out, the construction worker installs it by hand, with both ends reversed.
• When expanding the capacity and installing it, guess based on the old order number, rather than the label of the equipment on the network.

Verification and error-proofing actions

When receiving goods, first check whether the transmitting and receiving wavelengths of the labels at both ends are complementary before placing them in the warehouse; single-fiber links must be purchased and registered in pairs, such asGigabit single mode single fiber one optical one electrical fiber optic transceiverPack and ship according to A and B. During the maintenance phase, read the label of the old machine and take a photo before replacing parts. EB-LINK technical support can check the original pairing relationship based on the serial number. Tel: 0755-83179002. Treat pairing as a process rather than a memorization task, and you can save more than half of the troubleshooting time for single-fiber links.