Re-thinking the design of low-loss hollow-core fibers via optimal positioning of the nested elements

Document Type

Article

Publication Title

Optics Letters

Publication Date

6-15-2022

Abstract

Nested negative curvature hollow-core fibers (NCFs) represent state-of-art optical guidance in the near-infrared (near-IR) region. In this Letter, we propose a unique design approach for these types of fibers in order to further improve optical transmission via the optimal positioning of the nested elements. The nested elements in the proposed design are located at the center of the cladding tubes and are supported by bar-type structures. The topological optimization for the nested elements results in improved light guidance by two orders of magnitude with confinement losses as low as 0.003 dB/km within the targeted wavelength range of 1450 nm to 1600 nm. This bar-supported design features strong single-mode operation and low bending sensitivity in a wide range of bending radii.

Volume

47

Issue

12

First Page

3039

Last Page

3042

DOI

10.1364/OL.455118

ISSN

01469592

E-ISSN

15394794

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