Title :
A simple and very effective method with improved sensitivity for fault location in optical fibers
Author :
Schlemmer, Bernd
Author_Institution :
VDI Technol. Center, Dusseldorf, Germany
Abstract :
A simple method for generating the reflection impulse response of optical fibers using the inverse Fourier transform of the real part of the fiber´s reflection baseband frequency-response is described. The achieved dynamic range was about 116 dB. The measurement setup can be simply realized and guarantees the detection of Fresnel reflections with extremely high sensitivity. To suppress undesired reflections, a mathematical convolution algorithm in the frequency domain was designed.<>
Keywords :
fault location; optical fibres; optical testing; reflectometry; Fresnel reflections; OFDR; baseband frequency-response; dynamic range; fault location; frequency domain; inverse Fourier transform; mathematical convolution algorithm; optical fibers; optical frequency domain reflectometry; reflection impulse response; sensitivity; Baseband; Convolution; Dynamic range; Fault location; Fourier transforms; Frequency; Fresnel reflection; Optical fibers; Optical reflection; Ultraviolet sources;
Journal_Title :
Photonics Technology Letters, IEEE
