Tapered nanoscale chalcogenide fibers directly drawn from bulk glasses as optical couplers for high-index resonators
Date
2017
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Abstract
We report production of air-clad tapered chalcogenide fibers by directly drawing bulk glasses between cleaved tips of tapered silica fibers. Exploiting these tapered fibers with nanoscale waists as evanescent optical couplers, we demonstrate phase-matched coupling of light into on-chip whispering gallery mode chalcogenide microresonators with coupling efficiencies as high as 95%. To the best of our knowledge, this is the first-time demonstration of critical coupling into high-index microresonators by using high-index tapered fibers. The tapered chalcogenide fibers can also be utilized as optical couplers for microresonators made of various high-index materials, as well as for nonlinear optical applications.
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Applied Optics
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OSA - The Optical Society
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Chalcogenides, Fibers, Glass, Nanotechnology, Optical fibers, Phase matching, Resonators, Whispering gallery modes, Chalcogenide fibers, Coupling efficiency, Critical coupling, Directly drawing, High index materials, Micro resonators, Nonlinear optical applications, Phase-matched coupling, Nonlinear optics
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English