Asynchronous bias control for an optical modulator using a multiple tone detection technique with phase correction
US10623105B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an asynchronous optical modulation system, a drive circuit may generate a plurality of dither tones in accordance with a predetermined dither frequency ratio. Based on the components of the dither frequency ratio, the optical modulation system may be configured to determine a feedback signal magnitude component that is independent of the delay τ and a feedback signal sign component that is also independent of the delay τ. A feedback signal that is independent of the delay τ can then be reconstructed based on the feedback signal magnitude component and the feedback signal sign component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.