Method and apparatus for reducing adverse effects of optical beat interference in optical communication systems
US5798858A · kind A · utility
16Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Feb 1, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06817
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for reducing noise in optical communication systems, wherein the frequency of light output from a signal laser is modulated or dithered to broaden the optical spectrum of the signal laser. The broadening allows error-free data transmission within signal bands, despite the presence of optical beat interference. Different dithering tones are emitted by each laser in the network. The dithering tone for each signal laser in an optical network is chosen so that distortion resulting from the dithering tone falls outside the signal bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.