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US 2024/0170924 A1Published application
Optical modulator
AssigneeNippon Telegraph and Telephone Corporation
InventorsManabu Mitsuhara, Wataru Kobayashi
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Abstract
An optical modulator is formed on a substrate constituted of InP, and an active layer is formed on the substrate via a lower InP layer constituted of InP. The active layer has a multiple quantum well structure including a well layer constituted of a group III-V compound semiconductor including In, As, and P as constituent elements and a barrier layer constituted of a group III-V compound semiconductor including In, Ga, P, and Sb as constituent elements.
Claims19
1-5. (canceled)
An optical modulator, comprising:
- an active layer having a multiple quantum well structure comprising:
- a well layer constituted of a first group III-V compound semiconductor, the first group III-V compound semiconductor comprising In, As, and P;
- and
- a barrier layer constituted of a second group III-V compound semiconductor, the second group III-V compound semiconductor comprising group III-V compound semiconductor including In, Ga, P, and Sb,
- wherein a wavelength corresponding to a band gap of the multiple quantum well structure is in a range of 1.19 μm to 1.32 μm, and
- wherein the optical modulator is disposed on an InP substrate.
3 more elements
A method of forming an optical modulator, the method comprising:
- forming an active layer having a multiple quantum well structure on an InP substrate, the multiple quantum well structure comprising:
- a well layer constituted of a first group III-V compound semiconductor, the first group III-V compound semiconductor comprising In, As, and P;
- and
- a barrier layer constituted of a second group III-V compound semiconductor, the second group III-V compound semiconductor comprising group III-V compound semiconductor including In, Ga, P, and Sb, wherein a wavelength corresponding to a band gap of the multiple quantum well structure is in a range of 1.19 μm to 1.32 μm.
1 more element
Dependencies are inferred from the claim text.