Method and apparatus for analyzing the spectrum of radio-frequency signals using a fiber optic recirculation loop
US8861567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2012 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus comprising a fiber optical loop for conducting a first and a second pulse having a corresponding first and second wavelength, a first splitter for separating the first and second light pulses in the optical loop into a first and second light path to introduce a predetermined time delay between the first and second light pulses, a coupler for tapping a replica of the pair of light pulses from the loop, an auto-correlation module, coupled to the coupler, for correlating the replica of the pair of light pulses with each other to produce a set of data points comprising a plurality of multiplied and correlated pair of pulses and a transform module, coupled to the auto-correlation module, for transforming the data points into a channelized frequency spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.