Determination of femtosecond-laser-induced refractive-index changes in an optical fiber from far-field measurements

Juha-Matti Savolainen; Lars Grüner-Nielsen; Poul Kristensen; Peter Balling

doi:10.1364/OL.39.003398

Determination of femtosecond-laser-induced refractive-index changes in an optical fiber from far-field measurements

Juha-Matti Savolainen, Lars Grüner-Nielsen, Poul Kristensen, Peter Balling

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

7 Citations (Scopus)

Abstract

A new method for direct writing of localized, circularly symmetric refractive-index changes in optical fibers with
a femtosecond laser is demonstrated. The refractive-index changes are characterized using a novel approach
employing comparison of numerical simulations to the measured far-field profiles of unmodified and modified
fibers. From the analysis, a negative refractive-index change of −0.015 0.005 within a radius of 0.6 0.1 μm
is determined.

Original language	English
Article number	208965);
Journal	Optics Letters
Volume	39
Issue	12
Pages (from-to)	3398-3401
Number of pages	4
ISSN	0146-9592
DOIs	https://doi.org/10.1364/OL.39.003398
Publication status	Published - 15 Jun 2014

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10.1364/OL.39.003398

Cite this

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title = "Determination of femtosecond-laser-induced refractive-index changes in an optical fiber from far-field measurements",

abstract = "A new method for direct writing of localized, circularly symmetric refractive-index changes in optical fibers witha femtosecond laser is demonstrated. The refractive-index changes are characterized using a novel approachemploying comparison of numerical simulations to the measured far-field profiles of unmodified and modifiedfibers. From the analysis, a negative refractive-index change of −0.015 0.005 within a radius of 0.6 0.1 μmis determined.",

author = "Juha-Matti Savolainen and Lars Gr{\"u}ner-Nielsen and Poul Kristensen and Peter Balling",

year = "2014",

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language = "English",

volume = "39",

pages = "3398--3401",

journal = "Optics Letters",

issn = "0146-9592",

publisher = "Optica Publishing Group",

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Determination of femtosecond-laser-induced refractive-index changes in an optical fiber from far-field measurements. / Savolainen, Juha-Matti; Grüner-Nielsen, Lars; Kristensen, Poul et al.
In: Optics Letters, Vol. 39, No. 12, 208965);, 15.06.2014, p. 3398-3401.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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T1 - Determination of femtosecond-laser-induced refractive-index changes in an optical fiber from far-field measurements

AU - Savolainen, Juha-Matti

AU - Grüner-Nielsen, Lars

AU - Kristensen, Poul

AU - Balling, Peter

PY - 2014/6/15

Y1 - 2014/6/15

N2 - A new method for direct writing of localized, circularly symmetric refractive-index changes in optical fibers witha femtosecond laser is demonstrated. The refractive-index changes are characterized using a novel approachemploying comparison of numerical simulations to the measured far-field profiles of unmodified and modifiedfibers. From the analysis, a negative refractive-index change of −0.015 0.005 within a radius of 0.6 0.1 μmis determined.

AB - A new method for direct writing of localized, circularly symmetric refractive-index changes in optical fibers witha femtosecond laser is demonstrated. The refractive-index changes are characterized using a novel approachemploying comparison of numerical simulations to the measured far-field profiles of unmodified and modifiedfibers. From the analysis, a negative refractive-index change of −0.015 0.005 within a radius of 0.6 0.1 μmis determined.

U2 - 10.1364/OL.39.003398

DO - 10.1364/OL.39.003398

M3 - Journal article

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SN - 0146-9592

VL - 39

SP - 3398

EP - 3401

JO - Optics Letters

JF - Optics Letters

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