A fiber run between two buildings uses laser optics and is specified for a single path of light down the fiber. Which cable matches?
Select an answer to reveal the explanation.
Short Explanation
The light is supposed to take one path down a very thin core, which is what a laser optic on a long run is built for. You pull single-mode fiber. The fatter multi-path fiber, a copper coax, and a shielded copper pair are not that laser's single path.
Full Explanation
Single-mode fiber has a small core that carries one path of light, and it is the fiber used with laser optics on long runs such as building to building. The specification in this job matches single-mode. Multimode fiber has a larger core and carries multiple paths of light. It is the wrong match for a single-path laser specification, even though it is also fiber. Coaxial cable carries electrical signals, not an optical path. Shielded copper reduces electrical interference. A laser optic does not drive it, and it is not fiber. Exam caveat: the connector and the optic still have to match the fiber. Single-mode fiber with a multimode optic will not make the link you expect. Operational check: read the jacket print for single-mode, confirm the optic is the matching laser type, and verify the link light at both buildings. Check the optic label against the jacket print at both buildings before you leave the pull. Verify the link light at both buildings after the optics are seated. Leave a loop of slack at each end so the fiber is not tight in the tray.