Avalanche photodiode receiver
US9759602B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2016 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Dec 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting an optical signal, comprising the steps of: providing an avalanche photodiode (APD) comprising a multiplication region capable of amplifying an electric current, said multiplication region, in operation, having a first ionization rate for electrons and a second ionization rate for holes, wherein said first ionization rate is different in magnitude from said second ionization rate, and exposure to the optical signal causes an impulse response; exposing the APD to a modulating optical signal; providing an external circuit that induces an APD bias to the multiplication region; providing an external circuit for amplifying and processing an electric signal from the avalanche photodiode; and modulating the APD bias in a manner that is correlated with the optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.