Wavelength dispersion probing system
US7020360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wavelength dispersion probing system for determining a value of wavelength dispersion and its sign and reducing the trouble and time required for this determination. This wavelength dispersion probing system comprises light sources 10, 12, light attenuators 14, 16, optical multiplexer 18, phase modulator 20, optical amplifiers 22, 26, acoustooptical modulator 24, optical receiver 30. The intensity ratio of two wavelengths is set at 1 to 2 to detect Stokes light or anti-Stokes light included in the return light of an optical fiber 100 by the optical receiver 30, so that wavelength dispersion is probed. The wavelength dispersion is probed by changing the intensity ratio of the two wavelengths to observe the state of the change of the wavelength dispersion, so that the sign of wavelength dispersion is determined by the optical receiver 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.