All modern communications systems are based on fiber optic cable – hair-thin (or thinner) strands of glass that carry information by transmitting pulses of light, which are usually created by lasers. The pulses are turned on and off very, very quickly. A single fiber can carry multiple streams of information…
By: Larry Johnson The optical time domain reflectometer (OTDR) is now thirty-six years old and aging gracefully. While fiber optic cables had been installed in North America since 1977, one major concern was and still is: how do we accurately locate a fault? This is the major reason that OTDRs…
One of the many reasons to use an OTDR for testing and troubleshooting is to get data about a severe bend or break in your cable plant. The OTDR can provide the location of a break so that you can send out a crew to repair it. But, how accurate…