Superluminescent diode with integrated absorber and photodetector
US12356758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Nov 9, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L25/167
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment of a superluminescent diode, a first diode adapted on a semiconductor die is to be forward-biased to output optical energy in response to a bias signal, and a second diode adapted on the semiconductor die is to be reverse-biased, the second diode to receive and absorb back propagating optical energy from the first diode and output a measure of the back propagating optical energy as an absorber feedback current. A comparator may be configured to compare the absorber feedback current to a reference current and output a comparison signal, and a driver control circuit coupled to the comparator may provide the bias signal based at least in part on the comparison signal. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.