Abstract
This paper proposes a new method of converting IR images into the visible region
of the spectrum of electromagnetic waves, using waveguide cavity structures of
micrometer size as sensitive elements. The method is based on modulation of the
intrinsic equidistant spectrum of the cavity under the external action of
electromagnetic radiation in the IR region by varying the optical properties of the
material from which the sensitive element is made. The structure and the operating
principles of the IR-to-visible image converter is discussed on the basis of an array of
waveguide ring microcavities. It is shown that the sensitivity of such a converter to
variation of the IR radiation power can reach 2.6×10<sup>−12</sup>W.
© 2008 Optical Society of America
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