Supercontinuum noise reduction by fiber undertapering

Rasmus Dybbro Engelsholm, Ole Bang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We demonstrate that the Relative Intensity Noise (RIN) of a supercontinuum source can be significantly reduced using the new concept of undertapering, where the fiber is tapered to a diameter that is smaller than the diameter that gives the shortest blue edge, which is typically regarded as the optimum. We show that undertapering allows to control the second zero dispersion wavelength and use it as a soliton barrier to stop the red shifting solitons at a pre-defined wavelength, and thereby strongly reduce the RIN. We demonstrate how undertapering can reduce the spectrally averaged RIN in the optical coherence tomography bands, 500 − 800 nm and 1150 − 1450 nm, by more than a factor two.
Original languageEnglish
JournalOptics Express
Volume27
Issue number7
Pages (from-to)10320-10331
ISSN1094-4087
DOIs
Publication statusPublished - 2019

Cite this

Engelsholm, Rasmus Dybbro ; Bang, Ole. / Supercontinuum noise reduction by fiber undertapering. In: Optics Express. 2019 ; Vol. 27, No. 7. pp. 10320-10331.
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Supercontinuum noise reduction by fiber undertapering. / Engelsholm, Rasmus Dybbro; Bang, Ole.

In: Optics Express, Vol. 27, No. 7, 2019, p. 10320-10331.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Supercontinuum noise reduction by fiber undertapering

AU - Engelsholm, Rasmus Dybbro

AU - Bang, Ole

PY - 2019

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N2 - We demonstrate that the Relative Intensity Noise (RIN) of a supercontinuum source can be significantly reduced using the new concept of undertapering, where the fiber is tapered to a diameter that is smaller than the diameter that gives the shortest blue edge, which is typically regarded as the optimum. We show that undertapering allows to control the second zero dispersion wavelength and use it as a soliton barrier to stop the red shifting solitons at a pre-defined wavelength, and thereby strongly reduce the RIN. We demonstrate how undertapering can reduce the spectrally averaged RIN in the optical coherence tomography bands, 500 − 800 nm and 1150 − 1450 nm, by more than a factor two.

AB - We demonstrate that the Relative Intensity Noise (RIN) of a supercontinuum source can be significantly reduced using the new concept of undertapering, where the fiber is tapered to a diameter that is smaller than the diameter that gives the shortest blue edge, which is typically regarded as the optimum. We show that undertapering allows to control the second zero dispersion wavelength and use it as a soliton barrier to stop the red shifting solitons at a pre-defined wavelength, and thereby strongly reduce the RIN. We demonstrate how undertapering can reduce the spectrally averaged RIN in the optical coherence tomography bands, 500 − 800 nm and 1150 − 1450 nm, by more than a factor two.

U2 - 10.1364/OE.27.010320

DO - 10.1364/OE.27.010320

M3 - Journal article

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SP - 10320

EP - 10331

JO - Optics Express

JF - Optics Express

SN - 1094-4087

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