Semiconductor based system and method for broad bandwidth transmission
US11863296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Jun 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/02216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed are techniques and amplifier stages that include wave division multiplexers, semiconductor optical amplifiers and wave division demultiplexers that amplify optical signals. An input optical signal having a first bandwidth is partitioned into a plurality of subband optical signals by thin film filters tuned to a selected bandwidth that is less than the first bandwidth. Each of the plurality of subband optical signals has a bandwidth that is a portion of the first bandwidth. Each subband optical signal is input into a semiconductor optical amplifier that is tuned to the respective portion of the first bandwidth that corresponds to the subband optical signal. The combination of the partitioned input optical signal and tuned semiconductor optical amplifiers provides improved optical signal transmission performance by reducing polarization dependent gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.