Optical transmitter and waveform compensation method
US9203518B2 · kind B2 · utility
8Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2012 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Nov 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/564
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transmitter includes an EA modulator, a photocurrent detection circuit, a modulator drive circuit, and a CPU. The EA modulator converts an input signal into an optical signal and outputs the optical signal. The photocurrent detection circuit detects an optical absorption current (a photocurrent) in the EA modulator. The modulator drive circuit controls the EA modulator. The CPU calculates a voltage to be applied to the modulator drive circuit based on the optical absorption current detected by the photocurrent detection circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.