Fiberized novel wavelength-scale planar waveguides

Abstract

The modern glass optical fiber, starting from the simplest circularly symmetric waveguide geometry, has been widely inspired by the geometrical structure and functionalities of glass or non-glass based planar channel waveguides. For instance, the currently well-developed microstructured optical fiber [1] has been inspired by works on planar photonic crystal waveguides [2]. On the other hand, planar channel waveguides, such as slab waveguides, ridge waveguides and slot waveguides, are typically fabricated by various processing approaches, e.g., deposition, sputtering, etching, lithography and so on, at relatively low temperatures. Compact microstructured planar waveguide devices play important roles in various technical areas including telecoms application, sensing, and biomedical diagnostics and imaging. In comparison with planar waveguides, optical fibers have numerous advantages, e.g., long length, low cost per unit length due to the high yield, and low propagation loss. Fiberization of planar waveguides is a simple and neat idea to combine the advantages of both planar and fiber waveguides for realizing economic and compact photonic devices.

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Identifiers

ORCID for Peter Horak: orcid.org/0000-0002-8710-8764

ORCID for Francesco Poletti: orcid.org/0000-0002-1000-3083

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