Accurate modeling of the intrinsic Brillouin linewidth via finite-element analysis

Peter D. Dragic; Benjamin G. Ward

doi:10.1109/LPT.2010.2081974

Accurate modeling of the intrinsic Brillouin linewidth via finite-element analysis

Research output: Contribution to journal › Article › peer-review

Abstract

We present a finite-element analysis of the Brillouin gain spectrum of a highly Ge-doped azimuthally symmetric nonuniform fiber treating the heterogeneous viscosity profile in detail. Measured Stokes' frequencies and spectral widths for the acoustic modes, and the peak Brillouin gain coefficient are found to be in excellent agreement with the model. An approximate expression for the Brillouin spectral width in azimuthally symmetric, nonuniform fibers is presented and verified for estimating this quantity using simplified boundary-value models.

Original language	English (US)
Article number	5590281
Pages (from-to)	1698-1700
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	22
Issue number	22
DOIs	https://doi.org/10.1109/LPT.2010.2081974
State	Published - 2010

Keywords

Brillouin scattering
finite-element methods
nonlinearities
optical fibers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Online availability

10.1109/LPT.2010.2081974

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title = "Accurate modeling of the intrinsic Brillouin linewidth via finite-element analysis",

abstract = "We present a finite-element analysis of the Brillouin gain spectrum of a highly Ge-doped azimuthally symmetric nonuniform fiber treating the heterogeneous viscosity profile in detail. Measured Stokes' frequencies and spectral widths for the acoustic modes, and the peak Brillouin gain coefficient are found to be in excellent agreement with the model. An approximate expression for the Brillouin spectral width in azimuthally symmetric, nonuniform fibers is presented and verified for estimating this quantity using simplified boundary-value models.",

keywords = "Brillouin scattering, finite-element methods, nonlinearities, optical fibers",

author = "Dragic, {Peter D.} and Ward, {Benjamin G.}",

note = "Funding Information: Manuscript received May 15, 2010; revised July 09, 2010; accepted August 21, 2010. Date of publication September 30, 2010; date of current version October 29, 2010. This work was supported by the Joint Technology Office (JTO) through their High Energy Laser Multidisciplinary Research Initiative (HEL-MRI) program.",

year = "2010",

doi = "10.1109/LPT.2010.2081974",

language = "English (US)",

volume = "22",

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journal = "IEEE Photonics Technology Letters",

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AU - Ward, Benjamin G.

N1 - Funding Information: Manuscript received May 15, 2010; revised July 09, 2010; accepted August 21, 2010. Date of publication September 30, 2010; date of current version October 29, 2010. This work was supported by the Joint Technology Office (JTO) through their High Energy Laser Multidisciplinary Research Initiative (HEL-MRI) program.

PY - 2010

Y1 - 2010

N2 - We present a finite-element analysis of the Brillouin gain spectrum of a highly Ge-doped azimuthally symmetric nonuniform fiber treating the heterogeneous viscosity profile in detail. Measured Stokes' frequencies and spectral widths for the acoustic modes, and the peak Brillouin gain coefficient are found to be in excellent agreement with the model. An approximate expression for the Brillouin spectral width in azimuthally symmetric, nonuniform fibers is presented and verified for estimating this quantity using simplified boundary-value models.

AB - We present a finite-element analysis of the Brillouin gain spectrum of a highly Ge-doped azimuthally symmetric nonuniform fiber treating the heterogeneous viscosity profile in detail. Measured Stokes' frequencies and spectral widths for the acoustic modes, and the peak Brillouin gain coefficient are found to be in excellent agreement with the model. An approximate expression for the Brillouin spectral width in azimuthally symmetric, nonuniform fibers is presented and verified for estimating this quantity using simplified boundary-value models.

KW - Brillouin scattering

KW - finite-element methods

KW - nonlinearities

KW - optical fibers

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Accurate modeling of the intrinsic Brillouin linewidth via finite-element analysis

Abstract

Keywords

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