Optical Fiber Dual-Reflectometer for Accurate Measurements

In order to measure the reflection coefficients of opt fiber components as accurately as possible, a new "dual-reflectometer" method is proposed. This method is capable of eliminating the major systematic errors in incoherent continuous-wave reflectometers. Experiments have been made using a measurement system with a light-emitting diode (LED) and graded-index multimode fibers. Experimental results show the effectiveness of the method.