The objectives of this experiment are to observe the steps used in making a fiber splice and to introduce the Optical Time Domain Reflectometer (OTDR). Two short lengths of single fiber cables (multimode 50 m Orange). As the photo below by AT&T from the 1970s showed, one hair-thin fiber can carry more signals than the giant copper telephone cable in the photo. Studying a 650mm fiber optic analog link and the relationship between input and received signals. Jacket stripers for fiber outer jacket, inner and. The manual is compatible with most classroom texts and is ideal for creating a lab to go with almost any vocational or secondary-education fiber optics course. But most of us don't often stop to think about how, exactly, they work.