Linearized Optical Transmitter Using Feedback Control
US7340184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Feb 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/50575
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for linearizing an optical transmitter are described. A linearized optical transmitter according to the present invention includes a modulator bias voltage supply that biases an optical modulator. The optical modulator modulates an optical signal with a payload modulation signal. A feedback circuit receives electrical distortion signals generated by the modulator and generates a control signal in response to at least one of the electrical distortion signals. The control signal changes the bias voltage generated by the modulator bias voltage supply so as to reduce the at least one electrical distortion signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.