Dispersion determining method and apparatus
US4556314A · kind A · utility
18Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Aug 31, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The dispersion in an optical fiber is determined using an intensity or optical signal envelope cross-correlation. Light from an optical source is injected into two transmission paths in which the relative delay can be varied. At least one path comprises the optical fiber whose dispersion is to be determined. Each path provides an output signal having a signal envelope. These envelopes are then cross-correlated for a number of wavelengths to provide a measurement of group delay from which the dispersion is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.