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Transverse single-mode operation in a passive large pitch fiber with more than 200  μm mode-field diameter

 
: Steinkopff, A.; Jauregui, C.; Stutzki, F.; Nold, J.; Hupel, C.; Haarlammert, N.; Bierlich, J.; Tünnermann, A.; Limpert, J.

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Fulltext ()

Optics Letters 44 (2019), No.3, pp.650-653
ISSN: 0146-9592
English
Journal Article, Electronic Publication
Fraunhofer IOF ()

Abstract
In this Letter, we present, to the best of our knowledge, the largest effective single-mode fiber reported to date. The employed waveguide is a passive large pitch fiber (LPF), which shows the core area scaling potential of such a fiber structure. In particular, we achieved stable single-transverse mode transmission at a wavelength of 1.03 μm through a straight passive LPF with a pitch of 140 μm, resulting in a measured mode-field diameter of 205 μm.

: http://publica.fraunhofer.de/documents/N-549458.html