Title :
Optical frequency domain reflectometry with high sensitivity and resolution using optical synchronous detection with coded modulators
Author :
Dolfi, D.W. ; Nazarathy, Moshe
Author_Institution :
Hewlett-Packard Lab., Palo Alto, CA, USA
Abstract :
A new optical frequency domain reflectometry (OFDR) method is demonstrated. Two broadband, coded, travelling-wave electro-optic LiNbO3 modulators are used over a 25.6 GHz frequency range, one as a source and the other as an optical synchronous detector. A 4 mm resolution in fibre is achieved, along with a dynamic range improvement of approximately=18 dB (optical) over previous OFDR results.
Keywords :
optical variables measurement; reflectometry; LiNbO 3; OFDR; coded modulators; dynamic range improvement; frequency range; optical frequency domain reflectometry; optical synchronous detection; optical synchronous detector; travelling-wave electro-optic LiNbO 3 modulators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890116
