| Fiber optic communication systems have become | | | | eminently varies with wavelength, cable length, fiber |
| more of a challenge for network operators to | | | | optic backscatter co-efficient, along with splice and |
| strategically and promptly keep them running at top | | | | connector attributes. |
| performance in order to meet intense demands for | | | | Measurement parameters of fiber optics under test |
| reliable services. Many operators will go through a | | | | have to be carefully selected based on mode, length |
| rigorous fiber optic training course. As the fiber optic | | | | and attenuation, in order to optimize fiber optic |
| communication systems evolve, there become newer | | | | measurements with an older, manual OTDR. The |
| and more complex parameters to monitor, more links | | | | optimal parameters for all fibers, in exception for the |
| to install and maintain, and more expected disruptions | | | | shortest optical fibers, vary in relation to the distance |
| to track down. A new function in the primary test tool | | | | of the event from the instrument. The newest OTDR |
| for fiber optic cable plants is the Optical Time Domain | | | | instruments integrate software programs that |
| Reflectometer, or OTDR. The OTDR is an instrument | | | | automatically detect and configure the optimum test |
| that uses the inner back scattering properties of an | | | | parameters and show results in simple formats. |
| optical fiber to detect and categorize its condition by | | | | Most fiber optic cables require multiple OTDR |
| sending high power pulses of laser light down into the | | | | measurements by using different parameters to |
| fiber and capture the light that is reflected back. This | | | | completely and accurately characterize their property |
| new tool is of great significance for fiber optic | | | | ties. These types of tests can take more time than is |
| technicians. Fiber optic patch cables are another way | | | | acceptable during a network emergency or a lengthy |
| to provide the correct amount of light. | | | | commissioning process. When troubleshooting the |
| Software enhancements are reshaping OTDR testing | | | | close-range resolution versus long-range visibility, |
| with potent new data processing capabilities that allow | | | | several sets of waveforms must be acquired by using |
| even the least experienced operator to analyze the | | | | different OTDR settings as often as necessary. After |
| fiber optics quickly and completely, and to find subtle | | | | completing the first scan by using a short-duration |
| features easily. While OTDR concepts are basically | | | | optical pulse, the next scan will use a longer-duration |
| simple, precise measurements can be complicated. | | | | optical pulse to provide additional optical power to test |
| Reflected fiber optical power is a tiny fraction (of | | | | further along the optical fiber. |
| basically one-millionth) of transmitted pulse power that | | | | |