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what is O.T.D.R?in which principle does it works niru_38 06-September-2009 11:38:45 PMComments OTDR means Optical Time Domain Reflectometer it usese the principal of Light scattering and reflection.It sends out a very high power pulse and measures the light coming back. At any point in time, the light the OTDR sees is the light scattered from the pulse passing through a region of the fiber. Think of the OTDR pulse as being a "virtual source" that is testing all the fiber between itself and the OTDR as it moves down the fiber. Since it is possible to calibrate the speed of the pulse as it passes down the fiber, the OTDR can correlate what it sees in backscattered light with an actual location in the fiber. Thus it can create a display of the amount of backscattered light at any point in the fiber, Posted by adnanbuchh An Optical Time Domain Reflectometer (OTDR) www.wisegeek.com/what-is-an-otdr.htm Posted by sagitraz |
Posted: 07-September-2009 02:39:57 AM By: sagitraz An Optical Time Domain Reflectometer (OTDR) www.wisegeek.com/what-is-an-otdr.htm | |
Posted: 17-January-2010 04:58:22 AM By: adnanbuchh OTDR means Optical Time Domain Reflectometer it usese the principal of Light scattering and reflection.It sends out a very high power pulse and measures the light coming back. At any point in time, the light the OTDR sees is the light scattered from the pulse passing through a region of the fiber. Think of the OTDR pulse as being a "virtual source" that is testing all the fiber between itself and the OTDR as it moves down the fiber. Since it is possible to calibrate the speed of the pulse as it passes down the fiber, the OTDR can correlate what it sees in backscattered light with an actual location in the fiber. Thus it can create a display of the amount of backscattered light at any point in the fiber, |