Optical sensing methods
First Claim
1. A method of detecting optical scattering between two guided optical modes of a microresonator comprising:
- providing an optical sensing system comprising;
a light source;
one or more bus waveguides, the one or more bus waveguides comprising a first bus waveguide that has an input port that is in optical communication with the light source; and
a microresonator optically coupled to the one or more bus waveguides;
exciting at least a first resonant guided optical mode of the microresonator with the light source;
inducing a change in optical scattering from the first resonant guided optical mode to at least a second guided optical mode of the microresonator, the second mode being different than the first mode; and
detecting the change in optical scattering.
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Abstract
An optical sensing system and method is disclosed. In one embodiment, a method of detecting a scattering center includes the step of providing an optical sensing system including a light source, one or more bus waveguides where a first bus waveguide has an input port that is in optical communication with the light source, a microresonator optically coupled to the one or more bus waveguides, and a scattering center which is capable of optically coupling to the microresonator. The method further includes the steps of exciting at least a first resonant guided optical mode of the microresonator with the light source, altering a strength of optical coupling between the scattering center and the microresonator to induce a change in optical scattering between the first mode and at least a second guided optical mode of the microresonator, and detecting a change in transfer of energy from the first mode to the second mode.
68 Citations
33 Claims
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1. A method of detecting optical scattering between two guided optical modes of a microresonator comprising:
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providing an optical sensing system comprising; a light source; one or more bus waveguides, the one or more bus waveguides comprising a first bus waveguide that has an input port that is in optical communication with the light source; and a microresonator optically coupled to the one or more bus waveguides; exciting at least a first resonant guided optical mode of the microresonator with the light source; inducing a change in optical scattering from the first resonant guided optical mode to at least a second guided optical mode of the microresonator, the second mode being different than the first mode; and detecting the change in optical scattering. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of detecting a scattering center comprising:
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providing an optical sensing system comprising; a light source; one or more bus waveguides, the one or more bus waveguides comprising a first bus waveguide that has an input port that is in optical communication with the light source; a microresonator optically coupled to the one or more bus waveguides; and a scattering center which is capable of optically coupling to the microresonator; exciting at least a first resonant guided optical mode of the microresonator with the light source; altering a strength of optical coupling between the scattering center and the microresonator to induce a change in optical scattering between the first mode and at least a second guided optical mode of the microresonator; detecting a change in transfer of energy from the first mode to the second mode. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method of detecting an analyte comprising:
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labeling an analyte species with an optical scattering center; providing an optical sensing system comprising; a light source; one or more bus waveguides, the one or more bus waveguides comprising a first bus waveguide that has an input port that is in optical communication with the light source; and a microresonator optically coupled to the one or more bus waveguides, having a surface capable of chemically specific bonding with the analyte; exciting at least a first guided optical mode of the microresonator with the light source; exposing the surface of the microresonator to the labeled analyte species; inducing a change in optical scattering from the first mode into at least a second guided optical mode of the microresonator; detecting the change in optical scattering. - View Dependent Claims (31, 32, 33)
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Specification