Novel in-service supervisory system using OTDR for long-haul WDM transmission link including cascaded in-line EDFAs

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In this letter, we propose and demonstrate a novel optical supervisory system for long-haul wavelength-division-multiplexing (WDM) transmission link including cascaded erbium-doped fiber amplifiers (EDFAs). By employing a modified optical time domain reflectometry technique with a wavelength selective bidirectional EDFA, it was possible to monitor the status of the WDM transmission link and EDFA at in-service states with negligible power penalty. Proof of the concept with a 2.5 Gb/s x eight-channel WDM transmission system [single-mode fiber, 320 km] shows clear trace of the transmission line loss/gain/reflection map with minimal signal power penalty of 0.3 dB.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2001-10
Language
English
Article Type
Article
Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.13, no.10, pp.1136 - 1138

ISSN
1041-1135
URI
http://hdl.handle.net/10203/78730
Appears in Collection
NT-Journal Papers(저널논문)
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