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A short pulse length will improve distance resolution of optical events, but will also reduce measuring range and attenuation measurement resolution. Published by Brent Kelly Modified over 3 years ago. Fiber Optics Types Optical fibers are manufactured in three main types: Chapter 10 Fiber-Optic Test and Rfelectometer. OTDRs are also used to optimize splices in a fiber cable plant.
The two types of instruments cover the optical time domain reflectometer ppt of approaches to fiber optic plant taken by the communications providers. Often it is used in laboratories and in the itme for difficult fiber measurements. To make this website work, we log user data and share it with processors. The OTDR uses what is referred to as the backscatter method to test a single mode fiber link and find faults.
If a problem is found, its location is noted and the appropriate Operations Systems OSs are notified to begin the repair process. Share buttons are a little bit lower.
Larger, color displays are common.
OPTICAL TIME DOMAIN REFLECTOMETER (OTDR) – ppt video online download
They may be less feature rich than reflectometr OTDRs. They are feature-rich and usually larger, heavier, and less portable than either the hand-held OTDR or the fiber break locator. If you wish to download it, please recommend it to your friends in any social system. OK Computer Network Topologies. About project SlidePlayer Terms of Service.
An RFTS enables fiber physical plant to be automatically tested from a central location.
OPTICAL TIME DOMAIN REFLECTOMETER (OTDR)
Optical Reflection Measurements Lecture Despite being characterized as large, their size and weight is timd a fraction of that of early generation Reflecctometer. It acts as a waveguide, or “light pipe”, to transmit light.
If the end was shattered or immersed in water as can happen in a broken optocal situation then there may be a domzin reflection or no reflection at all. We think you have liked this presentation. The high powered signal pulse sent from an OTDR is to powerful to effectively test inside plant fiber, which is usually the installed multimode fiber. A central computer is used to control the operation of OTDR-like test components located at key points in the fiber network.
Often they can be used in conjunction with PC-based software to perform easy data collection with the hand-held OTDR and sophisticated data analysis with the PC-based software. It may also be used to locate faults, such as breaks, and to measure optical return loss. Auth with social network: By adding a cable at the far end it allows measuring the loss of the entire cable, but negates the big advantage of the OTDR, that it makes measurements from only one end of the cable.