Optical device for filtering and sensing

Details Optical device for filtering and sensing Optical device for filtering and sensing

G - Physics

02

F

G02F 1/25 (2006.01) G01N 21/25 (2006.01) G01N 21/55 (2006.01) G01N 33/48 (2006.01) G02B 5/18 (2006.01) G02F 1/01 (2006.01) G02F 1/13 (2006.01)

Patent

CA 2396859

An apparatus for filtering electromagnetic waves and sensing deposition of chemical species, the apparatus comprising a substrate having a surface relief structure containing at least one dielectric body with physical dimensions smaller than the wavelength of the filtered electromagnetic waves, such structures repeated in a two dimensional array covering at least a portion of the surface of the first substrate. The apparatus may include one, two, or more such arrays, spaced from one another to create one or more cavities between the arrays.

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