Triple output photodetector current replicator
US9602202B1 · kind B1 · utility
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12Claims
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Key dates
| Filing date | Sep 9, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Sep 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02218
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and systems for replicating current outputs from a photodetector include using a transimpedance (TIA) amplifier to directly generate a TIA output voltage that is linear with optical power at the photodetector. Additionally, a first logarithmic amplifier is used to generate a first output voltage from the photodetector current and a second logarithmic amplifier is used to generate a second voltage from a copy of the photodetector current. The first voltage and the second voltage may be linear in some cases with the optical power in decibels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.