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Opt Lett. 2011 Dec 15;36(24):4761-3. doi: 10.1364/OL.36.004761.

Photoinduced whispering gallery mode microcavity resonator in a chalcogenide microfiber.

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  • 1School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore. luanfeng@ntu.edu.sg


We demonstrate an approach to creating localized whispering gallery mode (WGM) microcavities by exploiting the photosensitivity of a chalcogenide (As2S3) microfiber. A highly prolate WGM microcavity with cavity quality factors (Q) exceeding 2×10(5) is fabricated and characterized. Without the need for geometrical shaping, our approach enables the cavity properties to be monitored during fabrication for the first time.

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