Optical high-power amplifier circuit with switchable polarized output state
US12316378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical high-power amplifier (“OPHA”) circuit, e.g., for a spaceborne satellite-based communication network, includes fiberoptic gain and polarization maintenance (“PM”) stages, a polarization splitter, first and second photodetectors, and an electronic control unit (“ECU”). The gain stage outputs an amplified optical signal in response to a low-power (“LP”) optical input signal. The PM stage outputs separate high and low power output signals in response to the amplified signal. A majority of power of the input signal is allocated to the HP output signal. The polarization splitter transmits the LP output signal along the slow and/or fast polarization axis. The photodetectors are arranged on the slow and fast axes. The ECU outputs a polarizer control signal to a polarization rotator device in response to electrical signals from one or both photodetectors to command the rotator device to output the LP optical input signal with a targeted polarized output state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.