Differential measurement scheme for Brillouin optical correlation domain analysis.
Opt Express
; 20(24): 27094-101, 2012 Nov 19.
Article
in En
| MEDLINE
| ID: mdl-23187565
ABSTRACT
We newly propose and experimentally demonstrate a differential measurement scheme for Brillouin optical correlation domain analysis, where the difference between Brillouin gain spectra constructed by a normal and a phase-modulated Brillouin pump waves are analyzed to measure local Brillouin frequencies in optical fibers. In experiments, a five-fold enhancement in the spatial resolution is obtained compared to an ordinary BOCDA system under the same modulation parameters, as a result of the improved dynamic range by the suppression of background noises.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Refractometry
/
Transducers
/
Optical Fibers
/
Fiber Optic Technology
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2012
Document type:
Article
Affiliation country:
South Korea