Measurement of effective refractive-index differences in a few-mode fiber by axial fiber stretching

doi:10.1364/OE.20.018646

Measurement of effective refractive-index differences in a few-mode fiber by axial fiber stretching

Juha-Matti Savolainen, Lars Grüner-Nielsen, Poul Kristensen, and Peter Balling »View Author Affiliations

Optics Express, Vol. 20, Issue 17, pp. 18646-18651 (2012)
http://dx.doi.org/10.1364/OE.20.018646

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Abstract

A method for measuring the effective refractive-index differences in a few-mode fiber by applying axial fiber stretching is described. This method represents a straightforward technique for characterization of few-mode fibers. Interference between LP₀₁ and LP₁₁ and in some cases also between LP₁₁ and LP₂₁ are observed in a fiber designed for support of LP₀₁ and LP₁₁. The relative strength of the coupled modes depends on specific splicing characteristics, and in some cases only two modes are seen. The results agree well with theoretical predictions for the fiber under investigation.

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2300) Fiber optics and optical communications : Fiber measurements
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 17, 2012
Revised Manuscript: July 4, 2012
Manuscript Accepted: July 5, 2012
Published: July 31, 2012

Citation
Juha-Matti Savolainen, Lars Grüner-Nielsen, Poul Kristensen, and Peter Balling, "Measurement of effective refractive-index differences in a few-mode fiber by axial fiber stretching," Opt. Express 20, 18646-18651 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-17-18646

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References

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