Optical waveguide terminators with doped waveguides
OwnerLong Cheninventor
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Abstract
Disclosed herein are methods, structures, apparatus and devices for the termination of unused waveguide ports in planar photonic integrated circuits with doped waveguides such that free-carrier absorption therein may advantageously absorb any undesired optical power resulting in a significant reduction of stray light and resulting reflections.
Claims7
A method corresponding to a photonic integrated circuit, said photonic integrated circuit including:
- one or more used ports and one or more unused ports;
- said method comprising:
- terminating one or more unused ports of the photonic integrated with a doped waveguide such that at least one of internal reflections or stray light is reduced when light traverses the one or more used ports;
- modifying a used port of the photonic integrated circuit such that the photonic integrated circuit includes an additional unused port;
- and
- terminating the additional port with a doped waveguide.
A method corresponding to a photonic integrated circuit said photonic integrated circuit including:
- one or more used ports and one or more unused ports;
- said method comprising:
- terminating one or more unused ports of the photonic integrated with a doped waveguide such that at least one of internal reflections or stray light is reduced when light traverses the one or more used ports, wherein said doped waveguide is doped at different concentrations at different parts of the waveguide.
A method corresponding to a photonic integrated circuit, said photonic integrated circuit including one or more used ports, said method comprising:
- modifying a used port of the photonic integrated circuit such that the photonic integrated circuit includes an unused port;
- and
- terminating the unused port of the photonic integrated with a doped waveguide.
Dependencies are inferred from the claim text.