Optical modulator
AssigneeSumitomo Electric Industries, Ltd.
InventorNaoya KONO
Life of this patent
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Abstract
An optical modulator includes a first mesa waveguide and a second mesa waveguide. Each of the first mesa waveguide and the second mesa waveguide includes a first semiconductor layer that has a p-type conductivity and is provided on a substrate, a second semiconductor layer that has a p-type conductivity and is provided on the first semiconductor layer, a core layer provided on the second semiconductor layer, and a third semiconductor layer that has an n-type conductivity and is provided on the core layer. The first semiconductor layer has a dopant concentration greater than a dopant concentration in the second semiconductor layer.
Claims10
An optical modulator comprising:
- a first mesa waveguide and a second mesa waveguide,
- the first mesa waveguide and the second mesa waveguide each including a first semiconductor layer having a p-type conductivity, a second semiconductor layer having a p-type conductivity, a core layer provided on the second semiconductor layer, and a third semiconductor layer having an n-type conductivity, the first semiconductor layer being provided on a substrate, the second semiconductor layer being provided on the first semiconductor layer, the third semiconductor layer being provided on the core layer, and
- the first semiconductor layer having a dopant concentration greater than a dopant concentration in the second semiconductor layer.
Dependencies are inferred from the claim text.