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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 23 — Nov. 10, 2008
  • pp: 18631–18645

The effect of periodicity on the defect modes of large mode area microstructured fibers

Joanne C. Flanagan, R. Amezcua, F. Poletti, J.R. Hayes, N.G.R. Broderick, and D. J. Richardson  »View Author Affiliations

Optics Express, Vol. 16, Issue 23, pp. 18631-18645 (2008)

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It is well known that periodic variations in refractive index can be used to create guidance in an optical fiber via photonic bandgap effects. It has also been shown that periodic structure in index-guiding microstructured fibers can lead to the guidance of additional leaky higherorder modes due to bandgap effects. Here we demonstrate that this additional guidance mechanism can have important practical implications in large mode area silica microstructured fibers. We also demonstrate that similar modes can exist when a bandgap is not present and attribute this guidance to a low density of states. Excellent agreement between theoretical predictions and experimental observations is demonstrated. We explore the impact of these additional modes on the practical operation of these fibers and explore ways of minimizing their effects via the fiber geometry.

© 2008 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 11, 2008
Revised Manuscript: September 17, 2008
Manuscript Accepted: September 22, 2008
Published: October 28, 2008

Joanne C. Flanagan, R. Amezcua, F. Poletti, J. R. Hayes, N. G. R. Broderick, and D. J. Richardson, "The effect of periodicity on the defect modes of large mode area microstructured fibers," Opt. Express 16, 18631-18645 (2008)

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