Tunable Bragg stack
First Claim
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1. A tunable photonic crystal device comprising:
- alternating layers of a first material and a second material, the alternating layers each being a fully continuous layer and comprising a responsive material, the responsive material being responsive to an external stimulus, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength;
wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength.
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Abstract
A tunable photonic crystal device comprising: alternating layers of a first material and a second material, the alternating layers comprising a responsive material, the responsive material being responsive to an external stimulus, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength; wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength.
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20 Claims
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1. A tunable photonic crystal device comprising:
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alternating layers of a first material and a second material, the alternating layers each being a fully continuous layer and comprising a responsive material, the responsive material being responsive to an external stimulus, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength; wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tunable photonic crystal electrochemical cell comprising:
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an electrically conductive working electrode and an electrically conductive counter electrode, the working and counter electrodes being spaced apart; a tunable photonic crystal device between the working and counter electrodes, in contact with at least one of the working and counter electrodes, the photonic crystal device comprising; alternating layers of a first material and a second material, the alternating layers comprising a responsive material, the responsive material being responsive to an external stimulus, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength; wherein, in response to the external stimulus, a change in the responsive material results in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength; and a conductive solution provided between the working and counter electrodes, the solution being in electrical communication with both the working and counter electrodes and the device; the cell being adapted to be connected to an electrical source for applying an electrical potential between the working electrode and the counter electrode to provide an electrical stimulus as the external stimulus to the device. - View Dependent Claims (16, 17, 18, 19)
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20. A method of manufacturing a tunable photonic crystal device comprising the steps of:
- providing a substrate;
fabricating alternating layers of a first material and a second material on the substrate, the alternating layers having a periodic difference in refractive indices giving rise to a first reflected wavelength; and
embedding the alternating layers the alternating layers each being a fully continuous layer, with a responsive material, the responsive material having a change in response to an external stimulus, resulting in a reflected wavelength of the device shifting from the first reflected wavelength to a second reflected wavelength.
- providing a substrate;
Specification