Chromatic dispersion measurement in a fiber optic cable
US5969806A · kind A · utility
31Cited by
1References
5Claims
0Family size
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Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/338
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Chromatic dispersion in an optical cable is measured by applying to the cable a signal that rapidly switches between a wavelength generated by a tunable optical source and a different wavelength generated by a reference source. The two sources are modulated in such a way that a delay line phase detection scheme at the far end of the cable can accurately measure relative delay between the tunable source and the reference source. The chromatic dispersion is determined by measuring the relative delay between the two sources for several different wavelengths of the tunable source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.