Optical active device
First Claim
Patent Images
1. An optical active device comprisinga slab photonic crystal structure including a slab layer having a two-dimensional expanse and comprising:
- an active layer, andfirst and second cladding layers sandwiching the active layer, wherein the slab layer hasa plurality of air holes extending through the slab layer so that air contacts opposite surfaces of the slab layer, the active layer in the air holes, and surrounds the active layer and the first and second cladding layers, wherein the air holes are arranged periodically in the slab layer and produce a periodic refractive-index distribution structure in a two-dimensional plane, anda waveguide including a first linear defect region in the periodic refractive-index distribution structure.
1 Assignment
0 Petitions
Accused Products
Abstract
In an optical device, a slab layer has an active layer sandwiched between two cladding layers. Periodic air holes are present in the slab layer. A linear defect region is present in a part of the air hole structures. As a result, laser oscillation is generated at the band end in a two-dimensional photonic crystal waveguide mode.
31 Citations
20 Claims
-
1. An optical active device comprising
a slab photonic crystal structure including a slab layer having a two-dimensional expanse and comprising: -
an active layer, and first and second cladding layers sandwiching the active layer, wherein the slab layer has a plurality of air holes extending through the slab layer so that air contacts opposite surfaces of the slab layer, the active layer in the air holes, and surrounds the active layer and the first and second cladding layers, wherein the air holes are arranged periodically in the slab layer and produce a periodic refractive-index distribution structure in a two-dimensional plane, and a waveguide including a first linear defect region in the periodic refractive-index distribution structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification