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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 15 — Jul. 26, 2004
  • pp: 3436–3442

Simulations of the effect of the core ring on surface and air-core modes in photonic bandgap fibers

Hyang Kyun Kim, Michel J. F. Digonnet, Gordon S. Kino, Jonghwa Shin, and Shanhui Fan  »View Author Affiliations


Optics Express, Vol. 12, Issue 15, pp. 3436-3442 (2004)
http://dx.doi.org/10.1364/OPEX.12.003436


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Abstract

We show through computer simulations that the thin silica ring that surrounds the air core of a photonic-bandgap fiber introduces surface modes. The intensity profile and dispersion of these modes indicate that they are the modes of the waveguide formed by the ring surrounded by air on one side and the photonic crystal cladding on the other. The ring also induces small perturbations of the fundamental core mode. Coupling to those surface modes, which have propagation constants close to that of the core mode, are likely to induce substantial loss to the core mode. By reducing the thickness of the ring and/or by suitably selecting its radius the propagation constants of the surface modes can be moved farther from that of the core mode and the loss reduced.

© 2004 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2280) Fiber optics and optical communications : Fiber design and fabrication

ToC Category:
Research Papers

History
Original Manuscript: June 10, 2004
Revised Manuscript: July 7, 2004
Published: July 26, 2004

Citation
Hyang Kyun Kim, Michel Digonnet, Gordon Kino, Jonghwa Shin, and Shanhui Fan, "Simulations of the effect of the core ring on surface and air-core modes in photonic bandgap fibers," Opt. Express 12, 3436-3442 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-15-3436


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References

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