Apparatus and method for wavelength conversion and clock signal extraction using semiconductor optical amplifiers
US7277222B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2006 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Jul 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/299
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Provided is an apparatus and method for simultaneous optical wavelength conversion and optical clock signal extraction using semiconductor optical amplifiers (SOAs). The apparatus includes: a wavelength converter receiving a pump beam having input information and a probe beam having a different wavelength from the pump beam, and outputting the pump beam with an overshoot shifted to a red wavelength and an undershoot shifted to a blue wavelength due to non-linear characteristics and self-phase modulation of semiconductor optical amplifiers (SOAs) and the probe beam delivered the input information from the pump beam; an optical divider dividing output paths of the probe beam to which the input information has been delivered and the pump beam having the overshoot and the undershoot; a converted-wavelength extractor filtering the probe beam received from the optical divider; and a clock data regenerator obtaining a pseudo return-to-zero (PRZ) signal from the pump beam received from the optical divider and extracting a clock signal from the PRZ signal.The apparatus and method can simultaneously perform wavelength conversion and optical clock signal extraction on an NRZ signal using an o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.