Method for distributedly measuring polarization transmission matrices of optical fiber and system thereof
US9841349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Dec 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3181
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for distributedly measuring polarization transmission matrices of an optical fiber includes steps of: inputting a fully polarized pulse into the optical fiber with linear birefringence only; and demodulating polarization states of Rayleigh backscattered light at different points on the optical fiber from a pulse input end; after demodulating, dividing the polarization states of the Rayleigh backscattered light into Q groups in sequence, wherein every three polarization states are divided into one group; calculating a transmission matrix of Group N; and solving the equation set using a numerical analysis method for obtaining multiple solutions, and screening the multiple solutions according to characteristics of the polarization transmission matrix, wherein each time of screening provides a unique solution Mx(N) of the equation set; continually updating MA values for iteration, so as to obtain the distribution of polarization transmission matrices of the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.