Detector comprising a waveguide
US11156776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29332
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor detector (100) for electromagnetic radiation within a wavelength range is disclosed, comprising a first waveguide portion (110), a funnel element (130) configured to funnel incident electromagnetic radiation into a first end (112) of the first waveguide portion, and a second waveguide portion (120) extending in parallel with the first waveguide portion. The second waveguide portion is coupled to the first waveguide portion and configured to out-couple electromagnetic radiation from the first waveguide portion, within a sub-range of the wavelength range. Further, a photodetector (140) including a photoactive layer (144) is arranged at a second end (114) of the first waveguide portion and at an end (124) of the second waveguide portion, and configured to separately detect electromagnetic radiation transmitted through and exiting the first waveguide portion and the second waveguide portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.