Multi-frequency optical signal source having reduced distortion and crosstalk
US5576881A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Aug 29, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2507
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-frequency optical signal source is adapted to include a plurality of power splitters, each connected to obtain a portion of an electrical data signal used to modulate a different one of the plurality of input optical sources; a plurality of delay means, each connected to an output of a different power splitter, each delay means providing a different predetermined signal delay; and an electrical signal combiner having a plurality of inputs, each input connected to a different output of the respective delay means, for electrically combining a portion of the modulation signal received from the connected delay means to form a combined electrical signal at an output of the electrical signal combiner, the output of the combiner being connected to control biasing of the optical output amplifier. The resulting multi-frequency optical signal source exhibits reduced signal distortion and crosstalk by keeping the carrier density constant in its shared optical output amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.