Methods and apparatus for measuring multimode optical fiber bandwidth
US9377377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Jul 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2581
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for measuring the modal bandwidth of a multimode optical fiber as a function of wavelength are disclosed. The methods include emitting polarized light from a single-mode fiber, frequency-modulating the single-mode polarized light, and then conditioning the frequency-modulated polarized light to excite multiple modes of the multimode optical fiber. The multimode light transmitted by the multimode optical fiber is detected and analyzed by a network analyzer to determine a bandwidth for at least three different wavelengths. A controller performs a fit to the measured bandwidths using a fitting equation to determine the modal bandwidth as a function of wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.