Optical active device
First Claim
1. An optical active device comprising a two-dimensional slab photonic crystal structure, in which a slab layer having two-dimensional expanse and formed by laminating an active layer and a cladding layer, has a periodic refractive-index distribution structure in a two-dimensional plane, wherein the slab layer has a waveguide formed by introducing a first linear defect region in the periodic refractive-index distribution structure.
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Accused Products
Abstract
In an optical device a slab layer has a configuration such that an active layer is sandwiched between two cladding layers. Periodic air hole structures are formed in the slab layer. A linear defect region is provided in a part of the air hole structures. As a result, laser oscillation is generated at the band end in the two-dimensional photonic crystal waveguide mode.
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Citations
18 Claims
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1. An optical active device comprising a two-dimensional slab photonic crystal structure, in which a slab layer having two-dimensional expanse and formed by laminating an active layer and a cladding layer, has a periodic refractive-index distribution structure in a two-dimensional plane,
wherein the slab layer has a waveguide formed by introducing a first linear defect region in the periodic refractive-index distribution structure.
Specification