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US 9,806,112 B1Granted
Electrostatic discharge guard structure
AssigneeHuawei Technologies Co., Ltd.
InventorsDritan Celo, Dominic John Goodwill, Eric Bernier
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Abstract
The present application provides an electrostatic discharge guard structure for photonic platform based photodiode systems. In particular this application provides a photodiode assembly comprising: a photodiode (such as a Si or SiGe photodiode); a waveguide (such as a silicon waveguide); and a guard structure, wherein the guard structure comprises a diode, extends about all or substantially all of the periphery of the Si or SiGe photodiode and allows propagation of light from the silicon waveguide into the Si or SiGe photodiode.
Claims19
A photodiode assembly comprising:
- a photodiode;
- a waveguide in communication with the photodiode;
- and
- an electrostatic discharge guard structure extending about substantially all of a periphery of the photodiode and comprising a diode, wherein the guard structure is co-planar with the waveguide or in a plane parallel to the plane of the waveguide,
- wherein, when the guard structure is co-planar with the waveguide, the guard structure comprises at least one of:
- an aperture;
- and
- a substantially optically transparent structure at a wavelength of light detectable by the photodiode, and
- wherein, when the guard structure is not co-planar with the waveguide, at least one of the following applies:
- the guard structure is sufficiently spaced apart from the waveguide so that it substantially does not absorb light at the wavelength of light detectable by the photodiode;
- the guard structure comprises an aperture;
- and
- the guard structure comprises a structure that is substantially optically transparent at the wavelength of light detectable by the photodiode.
10 more elements
Dependencies are inferred from the claim text.