Method and apparatus for measuring polarization-mode dispersion
US6947129B1 · kind B1 · utility
10Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | May 11, 2004 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | May 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/336
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Polarization-mode dispersion (PMD) of an optical device, i.e. fiber or component is effected by launching a first pump laser beam of a fixed wavelength, a probe laser beam with a second fixed wavelength and a second pump laser beam having a variable wavelength and a polarization direction orthogonal to the other two beams into an optical device to generate three output signals which are input into a semiconductor optical amplifier to generate four-wave mixing (FWM) products. The average PMD of the device is computed by measuring the power of the FWM products versus the wavelength of the second pump laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.