Method for generating carrier residual signal and its device
US7869668B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 22, 2004 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | May 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/5165
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating a light wave having a specific wavelength, and an SSB optical modulator. A light wave emitted from the light source enters into the optical modulating unit. A light wave emitted from the optical modulating unit includes a carrier component related to a zero-order Bessel function and a specific signal component related to a specific high-order Bessel function while suppressing signal components other than the specific signal component related to the specific high-order Bessel function, and a ratio of optical intensity between the carrier component and the specific signal component is set substantially to 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.