Apparatus for re-shaping a train of light pulses, and apparatus for recovering a periodic signal synchronized on a train of modulated light pulses
US5594583A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1994 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Jun 17, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/299
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus for reshaping a train of light pulses includes an electro-absorbent modulator to which the train of pulses is applied for the purpose of being resynchronized and reshaped. A periodic signal generator that is adjustable in phase and frequency applies a periodic signal to the modulator to voltage control said modulator. Servo-control means control said generator in phase and in frequency to minimize the mean photocurrent delivered by the modulator while it is both in its absorbent state and receiving a light pulse. The apparatus may also be used to recover a periodic signal that is synchronized on a train of modulated light pulses. The invention is applicable to long distance telecommunications by transmitting soliton pulses along optical fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.