Photonic lanterns: a practical guide to filament tapering

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Date
2021
Volume
11
Issue
8
Journal
Optical materials express
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Publisher
Washington, DC : OSA
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Abstract

We present a detailed method of tapering and drawing photonic lanterns using a filament glass processing system. Single-mode fibers (SMFs) were stacked inside a low refractive index, fluorine-doped capillary, which was then heated and tapered to produce a transition from single-mode to multi-mode. Fabrication parameters were considered in four categories: method of preparation and stacking of SMFs into a capillary, heat and filament dimensions of the glass processor, capillary ID, and the use of vacuum during tapering. 19- and 37- fiber lanterns were drawn, demonstrating good fusion between SMF claddings, a clear differentiation between core and cladding in the multimode (MM) section, and well-ordered arrangements between SMFs, which is controlled during the tapering process. The transmission efficiency of a 19-fiber photonic lantern, compared to an MMF with the same core diameter and NA, has a relative transmission efficiency of 1.19 dB or 67.1%. The steps and parameters provided in this paper form a framework for fabricating quality photonic lanterns.

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Davenport, J. J., Diab, M., Deka, P. J., Tripathi, A., Madhav, K., & Roth, M. M. (2021). Photonic lanterns: a practical guide to filament tapering (Washington, DC : OSA). Washington, DC : OSA. https://doi.org//10.1364/OME.427903
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OSA Open Access Publishing Agreement