Fibercom S.l.

Aragon Photonics Labs S.l.u.

Aragon Photonics Labs, S.l.

Asier Villafranca Velasco

Carlos Heras Vila

Javier Pelayo Zueco

Iñigo Salinas Ariz

Francisco Manuel Lopez Torres

Francisco Manuel López Torres

Javier Preciado Garbayo

Miguel González Herráez

Sonia Martín López

María Del Rosario Fernández Ruiz

Miguel Soriano Amat

Hugo Fidalgo Martins

Jesús Mario Subías Domingo

Juan Ignacio Garcés Gregorio

Jose Antonio Lázaro Villa

Jesus Subías Domingo

Pascual Sevillano Reyes

Francisco Manuel LÓPEZ Torres

Carlos David Heras Vila

Juan José MARTÍNEZ Muro

A method and a system for interrogating an optical fiber includes a probe signal that has a first frequency comb at a first repetition rate (&#x394;f) injected into the optical fiber. A backscattering signal that includes the probe signal convolved with an impulse response of the optical fiber in reflection which is sensitive to at least one parameter being measured from the optical fiber is gathered. The backscattering signal is beaten with a local oscillator signal to generate a beating signal, the local oscillator signal including a second frequency comb at a second repetition rate that is offset from the first repetition rate (&#x394;f+&#x3b4;f) and being mutually coherent with the first frequency comb. The resulting beating signal is analysed to thereby determine the at least one parameter being measured from the optical fiber.

Method and system for interrogating optical fibers

The present invention relates to a system and method for measuring a wavelength-resolved state of polarization, for calculating differential group delay of an optical signal under analysis () by means of taking multiple measurements of the spectrum of the signal under analysis () with spectral filtering means () with an optical output the power of which depends on the polarization of the input. The polarization at the input of the spectral filtering means () is modified by means of a polarization transformer () which sequentially selects a plurality of output states of polarization. The spectral filtering means () can comprise a filter based on stimulated Brillouin scattering amplification () simultaneously combining wavelength discrimination and polarization discrimination.

System and method for measuring a wavelength-resolved state of polarization of an optical signal

This invention relates to a device and associated process capable of obtaining the optical spectrum phase of an optical signal or test signal to be analyzed using techniques for heterodyning between two monochromatic spectral components simultaneously extracted from the test signal itself by means of stimulated Brillouin scattering.

Method and device for complex analysis of optical spectrums

Growing community of inventors

Saragossa, Spain

Asier Villafranca Velasco