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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 34,
  • Issue 14,
  • pp. 3412-3417
  • (2016)

Large Mode Area Single Trench Fiber for 2 μm Operation

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Abstract

Performance of single trench fibers has been investigated using finite-element method at ${\mathbf{2}}\;{\mathbf{\mu m}}$ wavelength. Numerical investigations show that an effective single mode operation for large effective area between ${\mathbf{3000}} \hbox{--}{\mathbf{4000}}\;{\mathbf{\mu }}{{\mathbf{m}}^{\mathbf{2}}}$ and ${\mathbf{2000}} \hbox{--} {\mathbf{3000}}\;{\mathbf{\mu }}{{\mathbf{m}}^{\mathbf{2}}}$ can be achieved at ∼40 and ∼25 cm bend radius, respectively, by exploiting high delocalization of the higher order modes. Achievement of a large effective-area can be very useful to address nonlinear effects. Moreover, single trench fiber offers certain advantages such as low-cost fabrication and easy postprocessing (such as cleaving and splicing) thanks to the all-solid fiber design.

© 2016 IEEE

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