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Tapered polysilicon core fibers for nonlinear photonics

Lookup NU author(s): Professor Noel HealyORCiD

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Abstract

We propose and demonstrate a novel approach to obtaining small-core polysilicon waveguides from the silicon fiber platform. The fibers were fabricated via a conventional drawing tower method and, subsequently, tapered down to achieve silicon core diameters of ∼1 μm, the smallest optical cores for this class of fiber to date. Characterization of the material properties have shown that the taper process helps to improve the local crystallinity of the silicon core, resulting in a significant reduction in the material loss. By exploiting the combination of small cores and low losses, these tapered fibers have enabled the first observation of nonlinear transmission within a polycrystalline silicon waveguide of any type. As the fiber drawing method is highly scalable, it opens a route for the development of low-cost and flexible nonlinear silicon photonic systems.

Publication metadata

Author(s): Suhailin FH, Shen L, Healy H, Xiao L, Jones M, Hawkins T, Ballato J, Gibson UJ, Peacock AC

Publication type: Article

Publication status: Published

Journal: Optics Letters

Year: 2016

Volume: 41

Issue: 7

Pages: 1360-1363

Print publication date: 01/04/2016

Online publication date: 17/03/2016

Acceptance date: 17/02/2016

ISSN (print): 0146-9592

ISSN (electronic): 1539-4794

Publisher: Optical Society of America

URL: http://dx.doi.org/10.1364/OL.41.001360

DOI: 10.1364/OL.41.001360

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