Ofs Fitel, LLC

Torger Tokle

Lars Gruner-Nielsen

David W Peckham

Robert L Lingle

Alan H McCurdy

A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to, or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.

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Allerod, Denmark

Torger Tokle