PERFORMANCE IMPROVEMENT OF A COMBINED OTDR FOR DISTRIBUTED STRAIN ANDLOSS MEASUREMENT BY RANDOMIZING THE REFERENCE LIGHT POLARIZATION STATE

Authors
KURASHIMA T TATEDA M HORIGUCHI T KOYAMADA Y
Citation
T. Kurashima et al., PERFORMANCE IMPROVEMENT OF A COMBINED OTDR FOR DISTRIBUTED STRAIN ANDLOSS MEASUREMENT BY RANDOMIZING THE REFERENCE LIGHT POLARIZATION STATE, IEEE photonics technology letters, 9(3), 1997, pp. 360-362
Citations number
8
Categorie Soggetti
Optics,"Physics, Applied
Journal title
IEEE photonics technology letters → ACNP
ISSN journal
10411135
Volume
9
Issue
3
Year of publication
1997
Pages
360 - 362
Database
ISI
SICI code
1041-1135(1997)9:3<360:PIOACO>2.0.ZU;2-T
Abstract
We successfully improve the ability of an OTDR, which combines both BO TDR and COTDR functions, to measure strain and optical loss distributi on along optical fibers, by randomizing the polarization state of the reference lightwave for optical coherent detection. The OTDR is upgrad ed to provide a high-spatial resolution of up to 1 m in the BOTDR mode and a fading noise as low as 0.05 dB in the COTDR mode.