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Scientific article
English

Long-distance OTDR using photon counting and large detection gates at telecom wavelength

Published inOptics communications, vol. 213, no. 1-3, p. 57-61
Publication date2002
Abstract

Photon-counting OTDRs are typically used in a mode with spatial resolutions in the centimeter range. Here we demonstrate that their sensitivity and dynamic range can be enlarged using lower resolutions. A 44-dB dynamic range was experimentally obtained at a wavelength of 1550 nm. This represents a 4-dB increase compared to state-of-the-art long-haul classical OTDRs having the same spatial resolution, and could even be extended to 6.5 dB when using a source with +13-dBm peak power. Furthermore we demonstrate an original solution to suppress perturbing dead-zones.

Keywords
  • Photon counting
  • Optical time-domain reflectometry
Citation (ISO format)
SCHOLDER, François et al. Long-distance OTDR using photon counting and large detection gates at telecom wavelength. In: Optics communications, 2002, vol. 213, n° 1-3, p. 57–61. doi: 10.1016/S0030-4018(02)02053-9
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Article (Published version)
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ISSN of the journal0030-4018
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