Integrated laser and coupled waveguide
OwnerPhilip A. Congdon, Lily Y. Pang +1inventors
InventorsPhilip A. Congdon, Lily Y. Pang, Gary A. Evans
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Abstract
A grating (461) coupling the output of a semiconductor laser (410) in a semiconductor waveguide to a dielectric waveguide (451) having a core (458) which may be efficiently butt-coupled to the core of an optical fiber (470); the laser and semiconductor waveguide, coupling grating, and dielectric waveguide are integrated on a single substrate. Further, multiple lasers (410, 420, 430, 440) with differing lasing frequencies may be integrated and their outputs grating coupled into a single dielectric waveguide (450) for wavelength division multiplexing.
Claims15
A coupler between a semiconductor waveguide and a dielectric waveguide, comprising:
- a grating between a rectangular semiconductor waveguide and a dielectric waveguide with a roughly square core, wherein said grating has a mechanical wave vector equal to the difference between a propagation vector of said semiconductor waveguide and a propagation vector of said dielectric waveguide.
A coupler between a semiconductor waveguide and a dielectric waveguide, comprising:
- (a) a grating between a rectangular semiconductor waveguide and a dielectric waveguide with a roughly square core, wherein said grating is formed as an integral portion of the interface between a cladding of said semiconductor waveguide and a cladding of said dielectric waveguide, wherein said dielectric waveguide is intrinsically aligned to said grating and said semiconductor waveguide, and said grating has a mechanical wave vector equal to the difference between a propagation vector of said semiconductor waveguide and a propagation vector of said dielectric waveguide.
A coupler between a semiconductor waveguide and a dielectric waveguide, comprising:
- (a) a grating between a rectangular semiconductor waveguide and a dielectric waveguide with a roughly square core, wherein said grating is formed as an integral portion of the interface between said core and cladding of said dielectric waveguide, wherein said dielectric waveguide is intrinsically aligned to said grating, and said grating has a mechanical wave vector equal to the difference between a propagation vector of said semiconductor waveguide and a propagation vector of said dielectric waveguide.
Dependencies are inferred from the claim text.