Electrical Engineering and Computer Science Faculty Publications

Document Type

Article

Publication Title

Optics Express

Abstract

A hollow-core fiber using anisotropic anti-resonant tubes in the cladding is proposed for low loss and effectively single-mode guidance. We show that the loss performance and higher-order mode suppression is significantly improved by using symmetrically distributed anisotropic antiresonant tubes in the cladding, elongated in the radial direction, when compared to using isotropic, i.e. circular, anti-resonant tubes. The effective single-mode guidance of the proposed fiber is achieved by enhancing the coupling between the cladding modes and higher-order-core modes by suitably engineering the anisotropic anti-resonant elements. With a silica-based fiber design aimed at 1.06 μm, we show that the loss extinction ratio between the higher-order core modes and the fundamental core mode can be more than 1000 in the range 1.0-1.65 μm, while the leakage loss of the fundamental core mode is below 15 dB/km in the same range. © 2016 Optical Society of America.

First Page

8429

DOI

10.1364/OE.24.008429

Publication Date

2016

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