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22 August 1985Recent Advances In Optical Time Domain Reflectometry
The sensitivity and performance of single-mode Optical Time Domain Reflectometers has to date been insufficient to fully satisfy the requirements of the long haul telecommunications industry. Three approaches to the problem have been considered, namely conventional direct detection, long wavelength photon counting and coherent detection. The relative merits of these techniques are discussed with particular emphasis on the significance of new optical component developments.
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R. W. Vanlint, S. J. Barber, "Recent Advances In Optical Time Domain Reflectometry," Proc. SPIE 0522, Fibre Optics '85, (22 August 1985); https://doi.org/10.1117/12.946222