Reconfigurable optical receiver for use with multiple modulation techniques
US12283997B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2023 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Oct 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/66
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an optical receiver apparatus for use with multiple optical modulation techniques, a photodiode circuit is configured to process optical signals corresponding to multiple optical modulation techniques, including a first modulation technique and a second modulation technique different from the first modulation technique. The photodiode circuit includes: a first photodiode configured to receive a first optical signal corresponding to a first modulation technique, and a multiple-input second photodiode coupled in series with the first photodiode. The multiple-input second photodiode is configured to receive i) a second optical signal corresponding to the first modulation technique, and ii) a third optical signal corresponding to the second modulation technique. An input of a transimpedance amplifier is coupled to the first photodiode and the second photodiode via a node between the first photodiode and the second photodiode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.