Photodetector with tapered substrate
AssigneeCisco Technology, Inc.
InventorsJean-Luc J. TAMBASCO, Rajat SHARMA
Life of this patent
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Abstract
The present disclosure describes an optical system that includes a photodetector with a tapered substrate. The optical system includes a first optical device, a substrate, and an absorption region. The first optical device produces a first optical signal based on a first input optical signal and a second input optical signal. The substrate includes a first portion and a second portion. The first portion includes a first tapered edge that directs the first optical signal to the second portion. The absorption region is positioned on the second portion of the substrate. The absorption region produces a first electrical signal based on the first optical signal.
Claims20
An optical system comprising:
- a first optical device arranged to produce a first optical signal based on a first input optical signal and a second input optical signal;
- a substrate comprising a first portion and a second portion, wherein the first portion comprises a first tapered edge arranged to direct the first optical signal to the second portion;
- and
- an absorption region positioned on the second portion of the substrate, wherein the absorption region is arranged to produce a first electrical signal based on the first optical signal.
A method comprising:
- producing, by a first optical device, a first optical signal based on a first input optical signal and a second input optical signal;
- directing, by a first tapered edge of a first portion of a substrate, the first optical signal to a second portion of the substrate;
- and
- producing, by an absorption region positioned on the second portion of the substrate, a first electrical signal based on the first optical signal.
An optical system comprising:
- an optical multiplexer arranged to produce an optical signal based on a first input optical signal and a second input optical signal;
- and
- a photodetector comprising:
- a substrate comprising a first portion and a second portion, wherein the first portion comprises a first tapered edge arranged to direct the optical signal to the second portion;
- and
- an absorption region positioned on the second portion of the substrate, wherein the absorption region is arranged to produce a first electrical signal based on the optical signal.
Dependencies are inferred from the claim text.