Photonic sensor and a method of manufacturing such a sensor
First Claim
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1. A photonic sensor, comprising:
- a platform supported over a substrate by at least one leg, wherein there is a gap between the platform and the substrate;
a structure of the platform comprising dielectric material having a structure with reduced mass relative to a corresponding planar layer of dielectric material, the dielectric material comprising at least one of silicon oxide or silicon nitride;
a metal layer of the platform configured to reflect radiation back to the dielectric material, wherein the gap is between the metal layer and the substrate, and wherein the metal layer is perforated; and
a temperature sensor on the platform, wherein the temperature sensor is configured to sense a change in temperature due to absorption of radiation by the dielectric material of the platform.
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Abstract
A photonic sensor, comprising: a platform, a temperature sensor on the platform; and a structure formed on or as part of the platform.
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Citations
25 Claims
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1. A photonic sensor, comprising:
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a platform supported over a substrate by at least one leg, wherein there is a gap between the platform and the substrate; a structure of the platform comprising dielectric material having a structure with reduced mass relative to a corresponding planar layer of dielectric material, the dielectric material comprising at least one of silicon oxide or silicon nitride; a metal layer of the platform configured to reflect radiation back to the dielectric material, wherein the gap is between the metal layer and the substrate, and wherein the metal layer is perforated; and a temperature sensor on the platform, wherein the temperature sensor is configured to sense a change in temperature due to absorption of radiation by the dielectric material of the platform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of forming a photonic sensor, comprising:
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processing a portion of a semiconductor substrate so as to form a platform supported over a substrate and held to a supporting structure by at least one leg, the platform comprising dielectric material and a metal layer, the dielectric material comprising at least one of silicon oxide or silicon nitride, the metal layer forming a lower surface of the platform, the metal layer being configured to reflect radiation back to the dielectric material, wherein the metal layer is perforated, and wherein there is a gap between the lower surface of the platform and the substrate; forming a sub-wavelength structure on an upper surface of the platform, said structure comprising either a plurality of isolated or interconnected upstanding regions of the dielectric material; and forming a temperature sensor on the platform, wherein the temperature sensor is configured to sense a change in temperature due to absorption of radiation by the dielectric material. - View Dependent Claims (21, 22, 23)
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24. A photonic sensor, comprising:
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a platform supported by at least one leg; a structure of the platform comprising dielectric material and a plurality of voids, the dielectric material comprising at least one of silicon oxide or silicon nitride; a metal layer of the platform configured to reflect radiation back to the dielectric material, wherein the metal layer is perforated; and a temperature sensor on the platform, wherein the temperature sensor is configured to sense a change in temperature due to absorption of radiation by the dielectric material of the platform; wherein the sensor is configured to detect impinging optical radiation, and wherein the voids each have a width approximately equal to a wavelength of the impinging optical radiation. - View Dependent Claims (25)
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Specification