Photodetector for detecting incoming infrared light
US10700233B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 3, 2018 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Oct 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is described a photodetector for detecting incoming infrared light. The photodetector generally has a substrate; an i-type semiconductor region extending along the substrate, the i-type semiconductor region being sandwiched between a p-type semiconductor region and an n-type semiconductor region; a grating coupler being optically connected to one of two ends of the i-type semiconductor region, the grating coupler redirecting incoming infrared light into and along the i-type semiconductor region via the one of the two ends of the i-type semiconductor region for propagation of infrared light along the i-type semiconductor region; and a photocurrent detection circuit electrically connected to the p-type semiconductor region and to the n-type semiconductor region for detecting a photocurrent resulting from said propagation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.