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1.55 μm OTDR for single-mode optical fibre longer than 110 km

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3 Author(s)
Nakazawa, M. ; NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan ; Morishige, Y. ; Toratani, H.

An optical time domain reflectometer for a single-mode optical fibre longer than 110 km has been newly demonstrated using a 1.55 μm Er3+: glass laser, a TeO2 acousto-optical directional coupler and a Ge avalanche photodiode.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 8 )