High speed detectors having integrated electrical components
US6774448B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Nov 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/803
Abstract
An opto-electronic device configured as a photodetector has a capacitor and/or resistor monolithically formed on a surface of the photodetector. The capacitor capacitively couples the AC ground of the photodetector to the bias terminal of the photodetector. The on chip capacitor design eliminates the inductance of external circuit traces between the power supply and an external capacitor. The resistor forces the AC return current of the photodetector through the AC ground in preference to the typical (DC bias terminal) path. Combinations of capacitors and resistors are particularly effective in reducing crosstalk among adjacent detectors in arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.