Optical integrated element and optical module
AssigneeFurukawa Electric Co., Ltd.
InventorsYusuke Saito, Kazuaki Kiyota
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Abstract
An optical integrated element includes: a substrate; a first waveguide region in which a lower cladding layer, a first core layer, and an upper cladding layer are sequentially laminated in this order on the substrate; and an active region in which the lower cladding layer, a second core layer, a quantum well layer that amplifies light when a current is injected, and the upper cladding layer are sequentially laminated on the substrate. Further, the second core layer and the quantum well layer are close to each other within a range of a mode field of light guided in the second core layer, and the first core layer is butt-jointed to the second core layer and the quantum well layer.
Claims10
An optical integrated element comprising:
- a substrate;
- a first waveguide region in which a lower cladding layer, a first core layer having a refractive index higher than the refractive index of the lower cladding layer, and an upper cladding layer having a refractive index lower than the refractive index of the first core layer are sequentially laminated in this order on the substrate;
- and
- an active region in which the lower cladding layer, a second core layer having a refractive index higher than the refractive index of the lower cladding layer, a quantum well layer that amplifies light when a current is injected, and the upper cladding layer are sequentially laminated on the substrate, wherein
- the second core layer and the quantum well layer are close to each other within a range of a mode field of light guided in the second core layer, and
- the first core layer is butt-jointed to the second core layer and the quantum well layer.
Dependencies are inferred from the claim text.