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1 January 1987 Detection Of Discrete Faults With Very Low Reflectivity Along Optical Fibers
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Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967300
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada
Abstract
Optical Frequency Domain Reflectometer (OFDR) has shown certain advantages over the Optical Time Domain Reflectometer (OTDR) for the detection of discrete faults along optical fibers (1-4). An OFDR usually employs a cw optical carrier modulated by a constant amplitude rf signal with a periodic linear frequency sweep (shown in Fig. 1). The detected optical echoes are delayed by propagation in the fiber to produce a delay in the sweep phase of the modulation. In this paper, OFDR has been employed for the detection of discrete faults with very low reflectivity along optical fibers by taking Fourier transform of the complex envelope of the echoes.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mehdi Shadaram "Detection Of Discrete Faults With Very Low Reflectivity Along Optical Fibers", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967300
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