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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 13 — Jun. 21, 2010
  • pp: 14270–14279

Slow-light enhanced absorption in a hollow-core fiber

Jure Grgić, Sanshui Xiao, Jesper Mørk, Antti-Pekka Jauho, and N. Asger Mortensen  »View Author Affiliations


Optics Express, Vol. 18, Issue 13, pp. 14270-14279 (2010)
http://dx.doi.org/10.1364/OE.18.014270


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Abstract

Light traversing a hollow-core photonic band-gap fiber may experience multiple reflections and thereby a slow-down and enhanced optical path length. This offers a technologically interesting way of increasing the optical absorption of an otherwise weakly absorbing material which can infiltrate the fibre. However, in contrast to structures with a refractive index that varies along the propagation direction, like Bragg stacks, the translationally invariant structures studied here feature an intrinsic trade-off between light slow-down and filling fraction that limits the net absorption enhancement. We quantify the degree of absorption enhancement that can be achieved and its dependence on key material parameters. By treating the absorption and index on equal footing, we demonstrate the existence of an absorption-induced saturation of the group index that itself limits the maximum absorption enhancement that can be achieved.

© 2010 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(160.5298) Materials : Photonic crystals

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 30, 2010
Revised Manuscript: June 9, 2010
Manuscript Accepted: June 16, 2010
Published: June 18, 2010

Citation
Jure Grgić, Sanshui Xiao, Jesper Mørk, Antti-Pekka Jauho, and N. Asger Mortensen, "Slow-light enhanced absorption in a hollow-core fiber," Opt. Express 18, 14270-14279 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-13-14270


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