Optical device
AssigneeNTT, Inc.
InventorsTakuma Tsurugaya, Shinji Matsuo, Koji Takeda, Takuro Fujii
Life of this patent
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Abstract
A difference Δ1 between an equivalent refractive index of a first reflecting section and an equivalent refractive index of a core in a first region that corresponds to the first reflecting section and a difference between an equivalent refractive index of a second reflecting section and an equivalent refractive index of the core in a second region that corresponds to the second reflecting section is set so as to be greater than a difference between an equivalent refractive index of a confining section and an equivalent refractive index of the core in a third region that corresponds to the confining section.
Claims20
An optical device, comprising:
- a Fabry-Perot optical resonator including:
- a first reflecting section constituted of a first thin-wire waveguide-type one-dimensional photonic crystal;
- a second reflecting section constituted of a second thin-wire waveguide-type one-dimensional photonic crystal;
- and
- a confining section between the first reflecting section and the second reflecting section;
- and
- a core arranged along the first reflecting section, the confining section, and the second reflecting section,
- wherein the core is separated from the first reflecting section, the confining section, and the second reflecting section, and a distance between the core and the confining section is set within a range that allows optical coupling to each other, and
- wherein a difference between an equivalent refractive index of the first reflecting section and an equivalent refractive index of the core in a first region that corresponds to the first reflecting section or a difference between an equivalent refractive index of the second reflecting section and an equivalent refractive index of the core in a second region that corresponds to the second reflecting section is greater than a difference between an equivalent refractive index of the confining section and an equivalent refractive index of the core in a third region that corresponds to the confining section.
An optical device, comprising:
- a Fabry-Perot optical resonator including:
- a first reflecting section constituted of a first photonic crystal;
- a second reflecting section constituted of a second photonic crystal;
- and
- a confining section between the first reflecting section and the second reflecting section;
- and
- a core arranged along the first reflecting section, the confining section, and the second reflecting section, wherein the core is separated from the first reflecting section, the confining section, and the second reflecting section, and wherein a difference between an equivalent refractive index of the first reflecting section and an equivalent refractive index of the core in a first region that corresponds to the first reflecting section is greater than a difference between an equivalent refractive index of the confining section and an equivalent refractive index of the core in a second region that corresponds to the confining section.
Dependencies are inferred from the claim text.