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Mid-infrared transmission properties of amorphous germanium optical fibers

Priyanth Mehta1, Mahesh Krishnamurthi2, Noel Healy1, Neil F.Baril2, Justin R.Sparks3, Pier J.A.Sazio1, Venkatraman Gopalan2, John V.Badding3, and Anna C.Peacock1

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

Abstract

Germanium optical fibers have been fabricated using a high pressure chemical deposition technique to deposit the semiconductor material inside a silica capillary. The amorphous germanium core material has a small percentage of hydrogen that saturates the dangling bonds to reduce absorption loss. Optical transmission measurements were performed to determine the linear losses over a broad mid-infrared wavelength range with the lowest loss recorded at 10.6 μm. The extended transmission range measured in the germanium fibers demonstrates their potential for use in mid-infrared applications.


Applied Physics Letters (2010) Vol.97 pp.071117

doi: 10.1063/1.3481413

Southampton ePrint id: 166173

 

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