Title :
OTDR in single-mode fibre at 1.5 ¿m using heterodyne detection
Author :
Healey, P. ; Malyon, D.J.
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
Heterodyne detection has led to a significant improvement in the range performance of an optical time-domain reflectometer designed to operate on single-mode fibre at a wavelength of 1.52 ¿m. With only 5 ¿W peak launched power a range of 30 km was achieved.
Keywords :
demodulation; optical fibres; optical variables measurement; time-domain reflectometry; OTDR; heterodyne detection; optical fibre reflectometry; optical time-domain reflectometer; range 30 km; range performance; single-mode fibre; wavelength 1.52 micron;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820585
