Customers may encounter various fault problems when using optical modules, among which the most common ones are link failure and packet loss. This article will focus on explaining the causes and solutions of optical module failures.

Not working

1. Optical link blockage caused by optical port pollution and damage: If the optical module is not in use, it must be covered with a dust cap to avoid dust contamination of the optical port causing link blockage.

2. Fiber optic connector end face contamination or failure: Fiber optic connectors often undergo multiple insertion and removal processes during network installation, debugging, and maintenance. During this process, it is common for operators to neglect the protection of the connector end face, resulting in contamination of the fiber optic end face, which affects the transmission performance of the optical link and can lead to paralysis of the entire fiber optic link

3. ESD damage: Static electricity can adsorb dust, alter the impedance between circuits, and affect the functionality and lifespan of optical modules.

4. Using inferior modules: Poor quality optical modules may have issues such as connectivity, packet loss, unstable transmission, and significant light attenuation

5. Wavelength and mode mismatch of the opposite end optical module: The wavelength of the optical module needs to be matched at each end, and wavelength mismatch may cause data loss during transmission. In addition, the working mode of the optical module should also be matched at both ends, and the full duplex optical module should be paired with the full duplex optical module

6. Transmitting or receiving light power too high or too low: Check if the optical module power of the opposite device is normal, and the emitted light power value should not be less than the minimum light power value

7. Fiber Mismatch: In the absence of excess single-mode fibers, multi-mode fibers can be used with single-mode optical modules, but it is best for single-mode modules to correspond to single-mode fibers, and multi-mode modules to correspond to multi-mode fibers.

8. Lack of conductive metal in the gold finger of the fiber optic module: The absence of a gold finger can cause the fiber optic module to malfunction. The conductive metal of the gold finger of the unqualified fiber optic module is missing, and the gloss is clearly insufficient.

Packet loss

1. The electronic functional circuits of the optical module and equipment do not match;

2. The main chip and device do not match;

3. Physical circuit failure;

4. Equipment malfunction;

5. Routing information error;

In summary, in order to greatly reduce the probability of optical module failures during use, it is best to choose optical modules with reliable and stable performance and guaranteed quality. At the same time, it is also necessary to understand the correct and professional operation methods, such as network cables, fiber optic jumpers, and other related equipment.