Abstract
A new scheme capable of suppressing polarisation sensitivity in the Brillouin optical time domain analysis distributed sensing system is demonstrated. The polarisation-induced signal fluctuation is suppressed from >±300ε (which causes measurement to fail) to ±50ε by introducing a cost-effective polarisation diversity scheme on the pump light. Stable distributed strain measurement along a 1.2km singlemode fibre is achieved. This scheme needs no active component and the strain measurement time is only 3s.
Original language | English |
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Pages (from-to) | 154-156 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 45 |
Issue number | 3 |
DOIs | |
Publication status | Published - 9 Feb 2009 |
Externally published | Yes |
ASJC Scopus subject areas
- Electrical and Electronic Engineering