Communication apparatus for transmitting and receiving signals over a fiber-optic waveguide using different frequency bands of light
US6310704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Jan 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03993
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus for transmitting and receiving signals over a fiber-optic waveguide using different frequency bands of light, i.e. by wavelength division multiplexing. A plurality of signal couplers interfaces modulated signals onto the waveguide in separate optical frequency bands, and a plurality of signal probes forming a probe array at one or more places in the waveguide, receives the signals, which are subject to scrambling and distortion as a result of physical irregularities in the waveguide. A recovery system coupled to the signal probes effects recovery and separation of the received signals using cumulant computations based on cumulants of the fourth or higher even order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.