Bit-phase synchronized optical pulse stream local generator
US6560007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A phase-lock loop is formed by a voltage-controlled oscillator, a local optical pulse source, an optical branching device for branching the locally generated optical pulse stream from the local optical pulse source, a harmonic component local generation part for locally generating a harmonic component electrical signal from the one of two branched locally generated optical pulse streams, and a phase comparison part for comparing the phases of the locally generated harmonic component electrical signal and an incoming signal component electrical signal generated from an incoming optical signal pulse stream and for supplying the voltage-controlled oscillator with a control voltage corresponding to the phase difference between the two input electrical signals. The other branched output from the optical branching device is output as a locally generated optical pulse stream bit-phase synchronized with the incoming optical signal pulse stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.