Increasing the working range of coherent optical time-domain reflectometer

Autor:	M. A. Sleptsov, V. A. Kamynin, A. Zh. Ozerov, E. T. Nesterov, Oleg E Nanii, V. N. Treshchikov, A. A. Sus’yan
Rok vydání:	2011
Předmět:	Optical fiber Materials science Physics and Astronomy (miscellaneous) Backscatter business.industry Physics::Optics Optical time-domain reflectometer Working range law.invention Wavelength Optics Fiber optic sensor law Attenuation coefficient Fiber business
Zdroj:	Technical Physics Letters. 37:417-420
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785011050130
Popis:	A new method for increasing the working range of a coherent optical time-domain reflectometer (COTDR) has been theoretically justified and experimentally demonstrated. The proposed method is based on the use of several types of optic fibers with different backscatter coefficients, in which the fiber with a higher backscatter coefficient is connected to the end of a fiber with the minimum absorption coefficient at the working wavelength, the length of which is the maximum possible in order to ensure a preset sensitivity level. It is shown that, using this approach, the COTDR working range can be increased up to 50 km.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6cd21cfc7754f95845a61c2e49e4f834 https://doi.org/10.1134/s1063785011050130 Zobrazit plný text záznamu Plný text ve formátu PDF