Optical modulation device and optical modulation method
US7773283B2 · kind B2 · utility
7Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/5561
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.