Circuits, architectures, apparatuses, methods and algorithms for determining a DC bias in an AC or AC-coupled signal
US9201103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2011 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | May 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/2506
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, circuits, architectures, apparatuses, and algorithms for determining a DC level in an AC or AC-coupled signal. The method generally includes disabling the AC or AC-coupled signal; sampling the disabled AC or AC-coupled signal to obtain sampled DC values of the AC or AC-coupled signal; and calculating the DC level using the sampled DC values of the AC or AC-coupled signal. The present transmitter generally includes an electro-absorption modulated laser (EML); a photodetector; a signal source configured to provide an AC or AC-coupled signal to the EML; and a microcontroller or microprocessor configured to (i) control the signal source, (ii) receive information from the photodetector, and (iii) deactivate the signal source for a predetermined length of time. The circuits, architectures, and apparatuses generally include those that embody one or more of the inventive concepts disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.