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Avoided crossings in photonic crystal fibers

 
: Jansen, F.; Stutzki, F.; Jauregui, C.; Limpert, J.; Tünnermann, A.

:
Postprint (1.5 MByte; PDF; )

Optics Express 19 (2011), No.14, pp.13578-13589
ISSN: 1094-4087
English
Journal Article, Electronic Publication
Fraunhofer IOF ()

Abstract
The impact of avoided crossings (also known as anti-crossings) in single and double-clad large mode area Photonic Crystal Fibers (PCFs) suitable for high-power laser systems is evaluated numerically. It is pointed out that an inappropriate choice of pump core diameter, bending radius and/or index depression may lead to avoided crossings that manifest themselves in unwanted deformations of the output beam.

: http://publica.fraunhofer.de/documents/N-174602.html