公开(公告)号：US20240194813A1

公开(公告)日：2024-06-13

申请号：US18063540

申请日：2022-12-08

Applicant: Cisco Technology, Inc.

Inventor： Kam Yan HON ,  Fatemeh REZAEIFAR BAYAT ,  Attila MEKIS ,  Gianlorenzo MASINI

IPC: H01L31/103 ,  H01L31/18

CPC classification number: H01L31/1037 ,  H01L31/184

Abstract: A photodetector includes a substrate, an absorber, a first doped region, and a second doped region. The absorber includes a first region and a second region that is more heavily doped than the first region. The first doped region is positioned on the substrate such that the first doped region contacts the second region of the absorber. A portion of the first doped region is positioned between the absorber and the substrate. The second doped region is positioned on the substrate such that the second doped region contacts the first region of the absorber rather than the second region of the absorber. A portion of the second doped region is positioned between the absorber and the substrate. The portion of the second doped region extends across a majority of a width of the absorber.

公开(公告)号：US20240038920A1

公开(公告)日：2024-02-01

申请号：US17816255

申请日：2022-07-29

Applicant: Cisco Technology, Inc.

Inventor： Fatemeh REZAEIFAR BAYAT ,  Kam Yan HON ,  Attila MEKIS ,  Gianlorenzo MASINI

IPC: H01L31/107

CPC classification number: H01L31/1075

Abstract: A photodetector includes a substrate, a first optical absorber, and a second optical absorber. The first optical absorber is disposed in the substrate along a direction of propagation of an optical signal through the substrate. The first optical absorber is offset in the substrate according to an offset of the optical signal in a direction orthogonal to the direction of propagation. The second optical absorber is disposed in the substrate along the direction of propagation of the optical signal. The second optical absorber is offset in the substrate according to the offset of the optical signal in the direction orthogonal to the direction of propagation.

公开(公告)号：US20240038919A1

公开(公告)日：2024-02-01

申请号：US17815115

申请日：2022-07-26

Applicant: Cisco Technology, Inc.

Inventor： Gianlorenzo MASINI ,  Kam Yan HON ,  Fatemeh REZAEIFAR BAYAT

IPC: H01L31/105 ,  H01L31/028

CPC classification number: H01L31/105 ,  H01L31/028

Abstract: A photodetector includes a substrate, an optical absorber, a first doped region, a second doped region, and a third doped region. The optical absorber is disposed in the substrate and includes a first region and a second region. The first doped region is disposed in the substrate such that the first doped region contacts the second region of the optical absorber. The second doped region is disposed in the substrate such that the second doped region contacts the second region of the optical absorber. The second region of the optical absorber is positioned between the first doped region and the second doped region. The third doped region is disposed in the substrate and has an opposite doping relative to the first doped region and the second doped region. The first region of the optical absorber is positioned between the third doped region and the second region of the optical absorber.