Method and apparatus for eliminating noise in analog fiber links
US6304369A · kind A · utility
38Cited by
11References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/505
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical transmission system that includes an optical amplifier coupled to the input of an optical modulator having at least two complementary output ports for providing complementary modulated optical output signals can be used such that the relative intensity noise (RIN) associated with the optical amplifier is coupled into the modulated optical output signals as common mode noise and can therefore be eliminated using a differential detection scheme. Removing the RIN associated with the optical amplifier advantageously increases the carrier to noise ratio (CNR) for the optical transmission system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.