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The Optical Time Domain Reflectometer (OTDR) is useful for testing the integrity of fiber optic cables. It can verify splice loss, measure length and find faults. The OTDR is also commonly used to create a "picture" of fiber optic cable when it is newly installed. Later, comparisons can be made between the original trace and a second trace taken if problems arise. Analyzing the OTDR trace is always made easier by having documentation from the original trace that was created when the cable was installed.
Yes, dirty connectors will cause Bit Errors because the contamination degrades the signal quality. In optical networks, the signal comes in the form of a beam of light travelling through the fiber’s core. The fiber’s core has a refractive index value of N1. When the light beam comes into contact with end face contamination, it is now coming entering a second medium which has different refractive index value which we will call N2.
One of the most overlooked aspects of fiber optic maintenance and troubleshooting is keeping the fiber optic connector endfaces clean. As we will discuss later in this article, a dirty fiber connection can either slow down or completely inhibit network traffic.
Fusion Splicing is a preferred way to join two fibers together by using heat. Whether the fiber was broken or not long enough, a fusion splicer will make your job easier. Splicing fiber optic cable is a fairly simple procedure. Prepared fiber ends are placed in the splicer and automatically aligned and then fused together. This method ensures greater reliability with less light being scattered or reflected back by the splice and with the splice itself being as strong as the original optical fiber.
