Optical time domain reflectometry in optical transmission linescontaining in-line Er-doped fiber amplifiers |
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| Authors: | Sato Y. Aoyama K. |
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| Affiliation: | NTT Transmission Syst. Lab., Kanagawa; |
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| Abstract: | Optical time domain reflectometry (OTDR) in an optical transmission line containing in-line Er-doped fiber amplifiers is investigated. The proposed Er-doped fiber amplifiers are based on optical circulators, which support both OTDR and digital signal transmission. The measurable limit of OTDR fault location in optical transmission lines containing in-line amplifiers is discussed. Fault location and 1.8-Gb/s digital signal transmission are demonstrated in a 316.9 km, optical transmission line constructed with three in-line Er-doped fiber amplifiers |
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