Resonant waveguide-grating devices and methods for using same
First Claim
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1. A method of using a waveguide grating, comprising:
- contacting a waveguide grating with a medium, the waveguide grating being disposed on a substrate and having at least one waveguide layer and at least one grating layer;
directing light toward the waveguide grating such that the light contacts the waveguide grating;
receiving light that is either reflected from or transmitted through the waveguide grating with a detection unit, the waveguide grating being configured such that a guided-mode resonance peak or minimum occurs in the reflected or transmitted light;
using the detection unit to determine an attribute of the received light; and
using the attribute to determine at least one parameter of the medium.
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Abstract
Waveguide gratings, biosensors, and methods of using a waveguide grating, including as a biosensor.
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Citations
23 Claims
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1. A method of using a waveguide grating, comprising:
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contacting a waveguide grating with a medium, the waveguide grating being disposed on a substrate and having at least one waveguide layer and at least one grating layer; directing light toward the waveguide grating such that the light contacts the waveguide grating; receiving light that is either reflected from or transmitted through the waveguide grating with a detection unit, the waveguide grating being configured such that a guided-mode resonance peak or minimum occurs in the reflected or transmitted light; using the detection unit to determine an attribute of the received light; and using the attribute to determine at least one parameter of the medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 22, 23)
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16. A method of using a waveguide grating, comprising:
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contacting a guided-mode resonance waveguide grating with a medium, the guided-mode resonance waveguide grating having at least one waveguide layer and at least one grating layer; directing light having transverse electric (TE) and transverse magnetic (TM) polarizations toward the guided-mode resonance waveguide grating such that the light contacts the guided-mode resonance waveguide grating; determining at least one parameter of the medium using a change in a resonance location in each of the TE and TM polarizations. - View Dependent Claims (17)
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18. A method of using a waveguide grating, comprising:
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contacting a guided-mode resonance waveguide grating with a material, the guided-mode resonance waveguide grating being disposed on a substrate and having at least one waveguide layer and at least one grating layer; directing light toward the guide-mode resonance waveguide grating and monitoring a change in an attribute of light that is either reflected from the guided-mode resonance waveguide grating or transmitted through the guided-mode resonance waveguide grating, the change in the attribute corresponding to the addition of a thickness of the material to the guided-mode resonance waveguide grating; where the monitoring involves the use of a detection unit that receives the light that is either reflected or transmitted, the detection unit comprises an optical spectrum analyzer, and the attribute comprises a location of a guided-mode resonance peak or minimum.
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19. A method of using a waveguide grating, comprising:
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contacting a guided-mode resonance waveguide grating with a material, the guided-mode resonance waveguide grating being disposed on a substrate and having at least one waveguide layer and at least one grating layer; directing light toward the guide-mode resonance waveguide grating and monitoring a change in an attribute of light that is either reflected from the guided-mode resonance waveguide grating or transmitted through the guided-mode resonance waveguide grating, the change in the attribute corresponding to the addition of a thickness of the material to the guided-mode resonance waveguide grating; where the monitoring involves the use of a detection unit that receives the light that is either reflected or transmitted, the attribute comprises a first attribute and a second attribute, the received light has a transverse electric (TE) polarization and a transverse magnetic (TM) polarization, and the monitoring comprises monitoring a change in the first attribute in the TE polarization of the received light and monitoring a change in the second attribute in the TM polarization of the received light to sense the change in the thickness of the material.
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20. A method of using a waveguide grating, comprising:
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contacting a guided-mode resonance waveguide grating with a material, the guided-mode resonance waveguide grating being disposed on a substrate and having at least one waveguide layer and at least one grating layer; directing light toward the guide-mode resonance waveguide grating and monitoring a change in an attribute of light that is either reflected from the guided-mode resonance waveguide grating or transmitted through the guided-mode resonance waveguide grating, the change in the attribute corresponding to the addition of a thickness of the material to the guided-mode resonance waveguide grating; where the monitoring involves the use of a detection unit that receives the light that is either reflected or transmitted, the received light has a transverse electric (TE) polarization and a transverse magnetic (TM) polarization, and the monitoring comprises monitoring a change in the attribute in the TE polarization and in the TM polarization of the received light to sense the change in the thickness of the material. - View Dependent Claims (21)
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Specification