Basic knowledge of optical time domain reflectometry (OTDR)

The dead zone is the area of ​​time between when the tester is temporarily blinded by a large amount of reflected light and until it recovers and can read the light again. Since the optical time domain reflectometer (OTDR) works by calculating the cable length and fault point based on time, a large number of reflections will cause the tester to take more time to recover, which creates a blind zone. The limitation of the blind zone makes optical time domain reflectometry (OTDR) unable to solve faults to a large extent.

When testing with an optical time domain reflectometer (OTDR), a visual fault locator (VFL) can be used to solve this problem in the dead zone. The Visual Fault Locator (VFL) can be used as a supplement to the Optical Time Domain Reflectometer (OTDR) in cable troubleshooting, and it can successfully cover the range that the Optical Time Domain Reflectometer (OTDR) cannot detect due to blind zones. The Visual Fault Locator (VFL) is designed with a visible laser and a universal adapter for SC, ST, FC and FJ connectors. It is very convenient to locate fiber optic cables, verify the connectivity and polarity of fiber optic cables, and help find breakpoints, connectors and splices in the cable. point. Therefore, the visual fault locator (VFL) is an ideal solution to solve and locate the blind zone problem of optical time domain reflectometer (OTDR).

Measurement Solutions for Optical Time Domain Reflectometry (OTDR)

Optical time domain reflectometer (OTDR) is widely used in the maintenance and construction of optical cable lines. It can measure fiber length, fiber transmission attenuation, joint attenuation and fault location. The figure below shows the measurement diagram and solution of the optical time domain reflectometer (OTDR). 

Line monitoring is an important task to ensure the smooth operation of the optical network. To ensure that it remains in optimal working condition, regular maintenance of the optical cable is required. As networks continue to evolve towards higher transmission rates in the future, optical time domain reflectometers (OTDR) play a vital role in ensuring that optical cables are not frequently replaced during use.