Correcting for spatial-resolution degradation mechanisms in OFDR via inline auxiliary points

The spatial resolution of OFDR is normally degraded by the laser phase noise, deviations from linear frequency scan and acoustic noise in the fibers. A method for mitigating these degradation mechanisms, without using an auxiliary interferometer, via inline auxiliary points, is presented and demonst...

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Bibliographic Details
Published in:Optics express 2012-12, Vol.20 (25), p.27465-27472
Main Authors: Sagiv, Oren Y, Arbel, Dror, Eyal, Avishay
Format: Article
Language:English
Subjects:
Calibration
Fiber Optic Technology - instrumentation
Fiber Optic Technology - methods
Fiber Optic Technology - standards
Fourier Analysis
Lasers, Dye
Models, Theoretical
Refractometry - instrumentation
Refractometry - methods
Refractometry - standards
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Summary:The spatial resolution of OFDR is normally degraded by the laser phase noise, deviations from linear frequency scan and acoustic noise in the fibers. A method for mitigating these degradation mechanisms, without using an auxiliary interferometer, via inline auxiliary points, is presented and demonstrated experimentally. Auxiliary points are points that are a priori known to have (spatial) impulse reflectivities. Their responses are used for compensating the phase deviations that degrade the response of points that are further away from the source.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.027465