Optical I-Q-modulator
US8295710B2 · kind B2 · utility
102Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Aug 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/548
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention describes a modulator for the quadrature modulation of an optical carrier signal with an I- and a Q-portion, where a first optical multimode interferometer (MMI) splits the optical carrier signal into four branches and that in pairs of branches the I-portion and the Q-portion respectively is modulated with a Mach-Zehnder-Structure and a second optical multimode interferometer (MMI) combines the modulated I-portion and Q-portion again to one quadrature modulated optical output signal (OS).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.