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US 2026/0081400 A1Published application
Multi-wavelength laser
AssigneeLumentum Operations LLC
InventorKouji NAKAHARA
Life of this patent
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Abstract
A multi-wavelength laser includes an active layer and a diffraction grating layer that includes a front diffraction grating region, a rear diffraction grating region, and a phase shift region between the front diffraction grating region and the rear diffraction grating region. The front diffraction grating region includes one or more grating regions. Each of the one or more grating regions includes a series of unit structures that are different from each other. The rear diffraction grating region has the same structure as a structure of the front diffraction grating region.
Claims14
A multi-wavelength laser, comprising:
- an active layer;
- and
- a diffraction grating layer including a front diffraction grating region, a rear diffraction grating region, and a phase shift region between the front diffraction grating region and the rear diffraction grating region,
- wherein the front diffraction grating region includes one or more grating regions,
- wherein each of the one or more grating regions includes a series of unit structures that are different from each other, and
- wherein the rear diffraction grating region has the same structure as a structure of the front diffraction grating region.
3 more elements
Dependencies are inferred from the claim text.