Optical fiber, short for optical fiber, is a light transmission tool that utilizes the principle of total reflection of light in fibers made of glass or plastic. Compared with copper cables, optical fibers are very fragile and easily damaged, especially during the construction of optical fibers. Today, let's talk about seven issues that must be paid attention to in the process of optical fiber construction.
Problem 1: Do not clean the fiber before splicing
Cleaning bare fibers is a very important step before fiber splicing. It should be noted that the bare fiber should be cleaned first, and then the bare fiber should be cut. In fact, nothing is cleaner than a freshly cleaved fiber endface, so you should never try to clean the fiber after cleaving, as this will contaminate the fiber endface. When cleaning bare fibers, it is strongly recommended that operators use fast-evaporating, non-flammable precision cleaning fluids.
Problem 2: Using Improper Cutting Tools
Whether the fiber end face is smooth or not has an important impact on the performance of the spliced or terminated fiber. In the past, fiber cleaving knives were commonly used to manually cleave fibers, requiring operators to be systematically trained and skilled. Now, with the development of technology, modern automatic cutting tools are very common in the market, these tools can improve the safety of the operator and protect the optical fiber. In general, the automatic cutting tool is an important tool to ensure the qualified fiber end face after cutting.
Problem 3: Do not calibrate before fiber splicing
It is very important to calibrate the fusion splicer. In particular, the intensity or current intensity of the arc needs to be adjusted frequently to ensure that the size of the fusion joint is appropriate, so as to ensure that the mechanical strength of the fusion joint is strong enough and the optical performance is good enough. This is especially important when working with air pressure changes or at high latitudes. In fact, the calibration work is very easy to do. For most fusion splicers, as long as the fiber is simply put on, it is like doing fusion splicing. However, when calibrating, you do not need to actually fuse, but to go to the maintenance menu of the fusion splicer, select the option of arc calibration or arc backtest, and the fusion splicer will tell the operator how to calibrate step by step. After the calibration is completed, the fusion splicer will also remind the calibration is complete or if the entire system needs to be re-tested.
Problem 4: Microbends in the fiber
Microbending of the optical fiber is generally caused by excessive pressure on the optical fiber. Microbending of the optical fiber can cause signal quality degradation, and this problem is difficult to detect with the naked eye unless an OTDR is used to check.
Problem 5: Fiber Excessive Bending
All optical cables have their own minimum bending radius. Therefore, we should pay attention not to exceed the minimum bending radius of the optical cable when constructing the optical cable, so as to avoid damage to the optical cable and the optical fibers in the sheath.
Question 6: Reuse wipes/cloths
Reusing wipes/cloths is a trivial act, because when a connector is cleaned with a wipe/cloth, the wipe/cloth gets dirty and gets oil on your hands And the gray layer, if it is used to wipe other connectors, it will contaminate other connectors. Of course, if you really want to save money, you can buy the smallest size wipes/cloths.
Problem 7: The connector end face is not inspected and cleaned before installation
The end face of the connector is also a place that is easily polluted by dust and oil. Therefore, when installing the connector, we should check and clean the end face of the fiber optic connector. The cost of a ferrule end-face detector is less than the cost of two on-site maintenance and construction. Are you willing to spend a little money to do a cleaning inspection in advance or repair it afterwards or at a large price?
Summarize
The above-mentioned problems are long-standing problems in optical fiber communication. These problems slow down the optical fiber network and often bring network failures. However, in fact, as long as the network construction personnel strictly follow the standard procedures and add a little care, they can be very Good to avoid these problems.
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