Connector performance directly affects the quality of optical transmission. Therefore, to ensure efficient transmission of optical fiber link signals, two key optical performance indicators, insertion loss and return loss, are usually used to evaluate them. The main function of the optical fiber connector is to quickly connect two optical fibers, to ensure accurate alignment between the two cores, and to realize the precise butt connection of the two optical fiber end faces, so that the optical power output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum. Therefore, when the fiber cores are not precisely aligned, that is, when the connector ferrule centering position is deviated, the insertion loss and return loss will be greatly affected.
Appropriate high-quality optical fiber connectors help to achieve long-term stable operation of high-speed transmission systems. At the same time, there are some tips for optimizing insertion loss and return loss during use:
1. Make sure the fiber connector is clean before use. If it is contaminated, use suitable tools for cleaning.
2. Avoid applying any improper pressure to the optical fiber during use, and do not bend the optical fiber beyond its maximum bending radius.
3. Minimize bending, coiling, fusion splicing, and coupling fiber jumpers, otherwise it may cause refraction of optical signals when passing through the fiber cladding. If you need to coil the fiber, you should keep a larger coil radius.
4. Use the factory to terminate the optical fiber. These terminations are carried out under strict control and are usually guaranteed by the manufacturer.
5. Reasonably weigh the power loss and the cost of the optical fiber, and the use of cheap and inferior optical fiber may cause greater cost loss in the future.
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