Divergence feedback in a linear fiber optic analog transmission system and method
US5535039A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Dec 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/254
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for improving the linearity of an analog signal in a fiber optic transmission system in which copies of the analog signal are provided to a remote receiver and to a feedback receiver, and in which the copy to the feedback receiver is attenuated so that the signal received at the feedback receiver is substantially similar to the signal received at the remoter receiver. An amplifier subtractively combines the signal from the feedback receiver and the analog signal to thereby provide a signal that pre-compensates for non-linearities that would be encountered by a transmission through the system. The feedback receiver and the remote receiver are substantially similar in operation so that the feedback loop substantially duplicates the environment of the transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.