Document Detail

Slow-light enhanced absorption in a hollow-core fiber.
MedLine Citation:
PMID:  20588562     Owner:  NLM     Status:  MEDLINE    
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.
Jure Grgić; Sanshui Xiao; Jesper Mørk; Antti-Pekka Jauho; N Asger Mortensen
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Optics express     Volume:  18     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-30     Completed Date:  2010-10-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  14270-9     Citation Subset:  IM    
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kongens Lyngby, Denmark.
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MeSH Terms
Fiber Optic Technology / methods*
Models, Theoretical*
Optical Fibers*
Reg. No./Substance:

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