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Tapered silicon optical fibers

N.Healy1, J.R.Sparks2, P.J.A.Sazio1, J.V.Badding2, and A.C.Peacock1

1. Optoelectronics Research Centre, University of Southampton, UK
2. Department of Chemistry and Materials Research Institute, Pennsylvania State University, 16802 PA, USA


The tapering of silicon optical fibers is demonstrated using a fusion splicer. The silicon fibers are fabricated using a high pressure chemical deposition technique to deposit an amorphous silicon core inside a silica capillary and the tapering is performed in a separate post-process. Optical and material characterization has revealed a smooth transition region leading to a uniform tapered waist that are both simultaneously crystallized to yield a solid polysilicon core. The strong mode confinement and low taper loss measured in the silicon fibers verifies this tapering approach for the fabrication of structures with nanoscale core dimensions.

Optics Express (2010) Vol.18(8) pp.7596-7601

doi: 10.1364/OE.18.007596

Southampton ePrint id: 179471


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