Practically in all kind of communication system, more or less losses are involved. To make the system more efficient, it is needed to identify and trace the faults & losses so that suitable techniques can be implemented to eliminate or reduce the losses. In optical fiber communication, optical time domain reflectometry (OTDR) is a commonly used technique for characterization and fault location of optical fiber transmission systems. It involves measuring the fraction of a probe pulse that is scattered back (by Rayleigh scattering) from a silica fiber. Because of the very small levels of backscatter in single-mode fiber at long wavelengths, very sensitive optical detection is necessary to achieve adequate range performance. This paper presents a practical approach, to understand the extent of feasibility of optical fiber cable (OFC) fault detection and rectification technique, being used in the India’s largest telecom service providing organization, Bharat Sanchar Nigam Limited (BSNL). BSNL has a 686644 Km OFC network which covers the entire country. The actual place of fault shows variation with the measured value of OTDR. Hence it becomes a tedious work to locate the actual place of fault, which leads to an uneconomical and time taking rectification method. The practically observed values of OTDR show the gradual decrement of accuracy in locating the actual place of fault. To solve the problem an algorithm is proposed. At the end of this paper, the experiment results are shown to verify the algorithm.
Related Articles
What you should know to choose a data center OTDR
With the technological evolution occurring in datacenters, test requirements dramatically changed for the ber networks that connect mission-critical servers, networking and storage devices. Selecting the proper OTDR to test your network not only strengthens its reliability, but also improves how quickly and ef ciently the job is done, as well as documenting the quality of […]
EXFO Power Meter Trouble Shooting
PPM-350C Troubleshooting The PPM-350C PON Power Meter was designed for two main purposes: Suit FTTP testing needs and to be easy to use for people who are not necessarily familiar with fiber optics in FTTx. Be used as a standard optical power meter (OPM operation mode). Solving Common Problems Problem Possible Cause Solution One of […]
EXFO Power Meter Calibration
Power Meter Calibration Introduction When it comes to calibration, it is not enough to state that an instrument complies with published specifications; it is necessary to be ready to prove it and to have a state-of-the-art system in place to monitor and preserve the quality of all calibrations. In 1998, EXFO decided to adopt the […]