Wideband subcarrier multiplexed optical communication system operating over more than one octave
US4953156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Sep 8, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0298
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical communication system includes an optical transmitter for transmitting a subcarrier multiplexed optical signal through a single mode optical fiber to an optical receiver. The optical transmitter includes a semiconductor laser diode for generating a light beam. The laser diode is preferably a high speed InGaAsP laser diode emitting in a spectral range of 1.3-1.6 micrometers. The light beam is intensity modulated with a composite modulation signal to provide the optical signal for transmission. The composite modulation signal includes multiple modulated microwave carriers that cover a total bandwidth greater than one octave. Harmonics and intermodulation products do not interfere with transmission, and a favorable signal-to-noise ratio or bit error rate is maintained when the bandwidth of the composite modulation signal exceeds one octave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.