BIOSENSOR COMPRISING WAVEGUIDE Russian patent published in 2019 - IPC G01N21/64 G01N21/77 

FIELD: optics.

SUBSTANCE: group of inventions relates to an optical device, a detection device and a method using a waveguide, which can be used in areas of biological probing and sequencing nucleic acids. Optical device has a waveguide substrate, a reflecting structure and a perforated structure. Waveguide substrate comprises a first surface and a second surface. Reflecting structure is located on the first surface of the waveguide substrate. Perforated structure is located on the second surface of the waveguide substrate. Perforated structure comprises apertures having diameter in at least one direction smaller than characteristic wavelength. Reflecting structure comprises diffraction structure inside one and the same combined structure. Diffraction structure enables diffraction of light entering the substrate from the outside into the substrate and reflection of light propagating in the substrate. At least one of the apertures of the perforated structure is a zero mode waveguide.

EFFECT: technical result achieved by the invention is the creation of a more efficient and/or more accurate means of processing optical signals, particularly in applications of bio-probing.

16 cl, 6 dwg