Abstract
Recently, high resolution spectroscopic devices where developed in the millimeter or micrometer size rang. Basically, three type of instruments are available: scanning Fabry-Perot (SFP) interferometer, grating spectrometer (GS), and array waveguide grating devices (AWG). The spectral resolution (R=λ/Δλ) of GS type of devices is limited to R ≤ 100 at present1. The width of the passband of AWG’s and SFP’s can be as high as Δν ~ 1GHz that corresponds to R ~ 105. In this paper we show that a comparable spectral resolution can be achieved using an array of spherical or nearly spherical dielectric microresonators arranged on a flat light guide.
© 2007 IEEE
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