Optical transfer linearity using test tones
US9407375B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Feb 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/588
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical system may have an optical transmitter including a digital signal processor to receive a signal channel, determine a digital signal associated with the signal channel based on information in a look-up table and based on a test tone, and output the digital signal. The optical system may further have a digital-to-analog converter to convert the digital signal to an analog signal, a laser to provide an optical signal, and a modulator to receive the optical signal and the analog signal, and modulate the optical signal based on the analog signal to form a modulated optical signal. The optical system may also have a photodiode to convert the modulated optical signal to a digital signal, a tone detector to detect the test tone based on the digital signal, and a controller to modify the information in the look-up table based on the test tone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.