Silicon microspheres for wavelength division multiplexing in the THz band - art. no. 61250T

Abstract

Microspheres possess high quality factor morphology-dependent resonances, i.e., whispering gallery modes. Additionally, silicon is proving itself to be an excellent optical material. We have studied the feasibility of silicon microspheres as a optical filters at THz communication frequencies. The silicon microsphere has a radius of 500 gm and a refractive index of 3.4. Elastic scattering spectra are calculated for TE and TM polarizations for wavelengths between 90 mu m and 100 mu m in the THz communication band. The high quality factor morphology dependent resonances are found to have a repetitive mode spacing of 1.2 mu m.