Diagnostic method and diagnostic chip for determining the bandwidth of optical fibers
US7945159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2007 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Sep 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/333
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a method for determining the bandwidths of optical fibers, wherein the method provides the coupling of light with a first optical power and a first modulation frequency into an optical fiber, as well as measuring a first signal level as a function of the optical power of the light of the first modulation frequency, coupling light with the second optical power and a second modulation frequency into the optical fiber, measuring a second signal level as a function of the optical power of the light of the second modulation frequency, and determining the bandwidths of the optical fibers as a function of the first and second coupled optical [power and/or] the measured first and second signal levels while using a predetermined specification that describes the frequency-dependent attenuation response of the optical fiber, wherein the first and the second modulation frequencies have essentially the same value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.