Packaged chalcogenide microsphere resonator with high Q-factor

Pengfei Wang, Ming Ding, Timothy Lee, Ganapathy Senthil Murugan, Lin Bo, Yuliya Semenova, Qiang Wu, Dan Hewak, Gilberto Brambilla, Gerald Farrell

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


The fabrication and characterization of a packaged As2S3 microsphere resonator coupled to a tapered fiber using a low refractive index UV-curable polymer are reported. Embedding provides an efficient means to remove the highest order whispering gallery modes in the microsphere resonator, thus cleaning the resonator spectrum. At wavelengths near 1549.5 nm, high-Q modes up to 1.8 × 105 can be efficiently excited in a 110 μm diameter chalcogenide microsphere via evanescent coupling from a 2 μm diameter tapered silica fiber. The device photosensitivity, useful for tuning, is still present and useable after the packaging process.
Original languageEnglish
Pages (from-to)131110
JournalApplied Physics Letters
Issue number13
Publication statusPublished - 2013


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