The Reasons of Optical Module Failure and its Prevention Ways

The failure of the optical transceiver is the commonly-seen problem in daily life. Many people may think why it is in failure when the optical module is applied in common ways. Today, Gigalight will expose the answer to you.

1. The Reasons Why Optical Module Is in Failure?

The failure of an optical transceiver module usually means the failure of receiving terminal and transmitting terminal. The factors that cause the failure of optics include the following aspects:

  • Optical Interface Is Polluted and Damaged

The pollution and loss of optical transceiver module will lead to that the dissipation of optical link becomes bigger so that the optical link is unlocked. However, what is the reason to cause this problem? The factors as below:

The exposure of the optical interface for a long time causes the dust into the interface so as to bring about the pollution; the surface of the used optical module is polluted, leading to the secondary pollution of the optical module’s optical interface;the endface of the optical connector with tail fiber is scratched; the quality of the optical module is too poor.

  • ESD Damage

ESD means electrostatic discharge. ESD can produce a lot of static electricity, which will adsorb dust and change the impedance between lines. Simultaneously, the heat generated by the instantaneous current of ESD can cause the component to be damaged, or even completely damaged. The causes of ESD damage are as follows:

The environment is too dry; there is an irregular operation, such as non-hot-pluggable optical module operating under electrification, without anti-static packaging in the process of transportation and storage; the equipment is without ground connection or imperfect earth.

2. The Procedures to Check the Failure of Optical Module

If the situation of no optic or low optical power rate happens, these measures can be taken:

Cleaning the interface of optical module; checking whether there are scratches and bending on the optic fiber connector; checking the wavelength of the optical power and the measurement unit(dBm); the hot-pluggable module can restart a plug test;test on the same ports by changing modules or on the same optical modules by changing the ports.

3. How to Avoid the Failure of Optical Module?

  • The Prevention Measures for Optical Interface Pollution of Optical Module:

Before operating the optical module, the paper for wiping optic fiber must be prepared well. The optical port must be cleaned before the patch cord is inserted into it to avoid the secondary pollution of the port caused by the endface pollution of the patch cord. On account that a piece of paper can only wipe one place, it is necessary to prepare at least 3 pieces of paper; the specific way is to wipe the fiber head horizontally in one direction; the temporarily-unused optical module must be worn a dust cap to avoid dust pollution; If no dust cap is available, it can be replaced by the optic fiber; if the optical module or optic fiber has not been used for a long time, the optical interface and optic fiber must be cleaned before they are utilized. Besides, what should be paid attention is that cleaning optical port needs to use a cotton stick, and cleaning optic fiber port needs to use paper for wiping optic fiber. And at the process of cleaning, pls insert cotton stick into the optical port, gently rotating, not excessive force.

  • The Prevention Measures to Avoid Optics Burnout

When using the OTDR table to test the link degree or attenuation degree of the optical fiber channel, the optic fiber can not disconnect with the optical fiber. Otherwise, the optical module is easily burnt down.

4. Conclusion

All in all, in order to ensure that the optical module can work normally, it is very important to check optics, keep the optical interface clean and prevent the interface from polluting to avoid the failure of optical modules. Above is the shared information for the optical transceiver. Hoping it can be helpful to you in future application of optical transceiver. More information about it is at Gigalight.

About Gigalight:

Gigalight is a design innovator in global optical interconnect field. A series of optical interconnect products include optical transceivers, passive optical components, active optical cables, GIGAC MTP/MPO cablings, cloud programmers & checkers, and etc. Three applications are mainly covered: Data Center & Cloud Computing, MAN & Broadcast Video, and Mobile Network & 5G Optical Transmission. Gigalight takes advantage of its exclusive design to provide clients with one-stop optical network devices and cost-effective products.


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