Integrated optical signal handling device
First Claim
1. An integrated optical signal handling device comprising:
- a substrate;
a light-guiding waveguide formed in or on the substrate, the waveguide being formed of a waveguide material and arranged to carry an input optical signal;
a resonator cavity region formed in or on the substrate, of a material having a rate of change of refractive index with temperature of greater magnitude than that of at least one of the substrate and the waveguide material, the resonator region being adjacent to the waveguide so as to allow optical coupling between the waveguide and the resonator region at least one coupling wavelength; and
a heating and/or cooling arrangement operable to vary the temperature of at least the resonator region so as to cause corresponding variation in the at least one coupling wavelength.
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Accused Products
Abstract
An integrated optical signal handling device comprises a substrate; a lightguiding waveguide formed in or on the substrate, the waveguide being arranged to carry an input optical signal; a resonator cavity region formed in or on the substrate, of a material having a rate of change of refractive index with temperature of greater magnitude than that of the substrate or waveguide material, the resonator region being adjacent to the waveguide so as to allow optical coupling between the waveguide and the res-onator region at one or more coupling wavelengths; and a heating and/or cooling arrangement operable to vary the temperature of at least the resonator region so as to cause corresponding variation in the coupling wavelengths.
19 Citations
35 Claims
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1. An integrated optical signal handling device comprising:
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a substrate; a light-guiding waveguide formed in or on the substrate, the waveguide being formed of a waveguide material and arranged to carry an input optical signal; a resonator cavity region formed in or on the substrate, of a material having a rate of change of refractive index with temperature of greater magnitude than that of at least one of the substrate and the waveguide material, the resonator region being adjacent to the waveguide so as to allow optical coupling between the waveguide and the resonator region at least one coupling wavelength; and a heating and/or cooling arrangement operable to vary the temperature of at least the resonator region so as to cause corresponding variation in the at least one coupling wavelength. - 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, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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26. (canceled)
Specification