Silicon microspheres for mid infrared photonics

Microspheres possess high quality factor morphology-dependent resonances, i.e., whispering gallery modes. These whispering gallery modes can be used in resonant cavity enhanced applications of optoelectronic devices such as, filters, detector, modulators and switches. Feasibility of silicon microsphere device at Mid-IR frequencies is studied. The high quality factor morphology dependent resonances have repetitive channel separations of 0.124 μm in silicon microspheres with a radius of 50 microns at wavelengths between 9.8 μm and 10.6 μm.

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