Method and apparatus for measuring chromatic dispersion in optical fibers
US6801308B2 · kind B2 · utility
2Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Feb 21, 2003 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Feb 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/338
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for measuring chromatic dispersion in a waveguide uses a probe signal and a modulated pump signal which are coupled together into a waveguide. The modulated pump signal causes spatial and temporal Raman gain modulation of the probe signal. The amplitude of the pump signal is modulated and the frequency response of the probe signal at the output end of the waveguide is measured. The chromatic dispersion of the waveguide at a given wavelength is determined from the measurements. The probe signal is provided by a CW laser or corresponds to the ASE generated by the pump signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.