Journal
OPTICS LETTERS
Volume 38, Issue 8, Pages 1301-1303Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.001301
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- COST action [TD1001 OFSeSa]
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A compact and robust scheme for broadband excitation of whispering gallery mode (WGM) resonances into a microsphere is demonstrated. A polymer microsphere (10 mu m) is encapsulated into the capillary of a microstructured optical fiber, in direct contact with the guiding core. Such a configuration allows efficient and reproducible excitation of the in-MOF-microsphere resonator that is characterized by two launch/collection schemes: core input/scattering output, and sphere input/core output. The latter allows an excitation of the microsphere WGMs externally to the fiber. Numerically calculated WGM spectra are in agreement with experiments. Q factors in the range of 10(3) are typically measured. (C) 2013 Optical Society of America
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