Simulation of Optical Fiber Amplifier Gain Using Equivalent Short Fibers
Sponsor
This work was supported in part by AFOSR, USA grants FA9550-17-1-0090, FA9550-19-1-0237, and by the AFRL, USA Cooperative Agreement 18RDCOR018.
Published In
Computer Methods in Applied Mechanics and Engineering
Document Type
Citation
Publication Date
3-1-2020
Abstract
Electromagnetic wave propagation in optical fiber amplifiers obeys Maxwell equations. Using coupled mode theory, the full Maxwell system within an optical fiber amplifier is reduced to a simpler model. The simpler model is made more efficient through a new scale model, referred to as an equivalent short fiber, which captures some of the essential characteristics of a longer fiber. The equivalent short fiber can be viewed as a fiber made using artificial (unphysical) material properties that in some sense compensates for its reduced length. The computations can be accelerated by a factor approximately equal to the ratio of the original length to the reduced length of the equivalent fiber. Computations using models of two commercially available fibers – one doped with ytterbium, and the other with thulium – show the practical utility of the concept. Extensive numerical studies are conducted to assess when the equivalent short fiber model is useful and when it is not.
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DOI
10.1016/j.cma.2019.112698
Persistent Identifier
https://archives.pdx.edu/ds/psu/32517
Citation Details
Drake, D., Gopalakrishnan, J., Goswami, T., & Grosek, J. (2020). Simulation of optical fiber amplifier gain using equivalent short fibers. Computer Methods in Applied Mechanics and Engineering, 360, 112698.
Description
Copyright © 2020 Elsevier