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Packaged chalcogenide microsphere resonator with high Q-factor
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View: Figures


Image of FIG. 1.
FIG. 1.

Simulated electric field distribution for a chalcogenide microsphere in (a, b) air and (c, d) polymer. λ = 1.55 μm light is coupled into the sphere from an adjacent silica taper. The field profiles in (b) and (d) are taken along y = 0.

Image of FIG. 2.
FIG. 2.

Schematic of the microsphere packaging process: (a) coupling optimization between optical fiber taper and chalcogenide microsphere, (b) embedding both microsphere and optical fiber taper in an UV-curable low refractive index material, and (c) coupling optimization in the embedding material and UV curing of the polymer.

Image of FIG. 3.
FIG. 3.

(a) Microscope image of a chalcogenide microsphere coupled with a silica fiber taper packaged in a cured polymer; (b) Packaged chalcogenide microsphere with a silica fiber taper on a glass slide.

Image of FIG. 4.
FIG. 4.

Optical fiber taper output over the wavelength ranges of 1540-1560 nm (up) and 1548-1552 nm (bottom) before embedding (black), in uncured polymer (red) and cured polymer (blue).

Image of FIG. 5.
FIG. 5.

Transmission spectra of the packaged chalcogenide microsphere in a wavelength range of 1549-1551 nm showing the periodic nature of the spectrum. Inset: Magnified view of the range from 1549.4 to 1549.5 nm. The resonance at 1549.46 nm has Q ∼ 1.8 × 105.

Image of FIG. 6.
FIG. 6.

(a) Transmission spectra of the packaged chalcogenide microsphere during exposure to a 405 nm laser radiation; (b) Peak shift as a function of exposure time, black dots are measured data and the solid curve is an exponential fit.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Packaged chalcogenide microsphere resonator with high Q-factor