Broad- and inter-band multi-wavelength-reference method and...

H - Electricity – 04 – B

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H04B 10/08 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2632175

A wavelength measurement or monitoring system [700] provides [702] a tunable Fabry-Perot optical filter [202]. At least one known light source [302, 304] is used [704] to calibrate and correlate separate wavelength bands [240, 242, 244] scanned by the tunable Fabry-5 Perot optical filter [202]. At least one wavelength reference [208, 402] is utilized [706] to calibrate at least one wavelength band [240, 242, 244] of the tunable Fabry-Perot optical filter [202]. The wavelength reference [208, 402] is transferred [708] to a wavelength band [240, 242, 244] that is identified for measurement when the wavelength reference [208, 402] is not in a wavelength band [240, 242, 244] identified for measurement by the tunable 10 Fabry-Perot optical filter [202]. An unknown optical signal [404] is scanned [710] through the tunable Fabry- Perot optical filter [202]. The wavelengths in the unknown optical signal [404] are specified [712].

L'invention concerne un système de mesure ou de surveillance de longueurs d'onde [700] qui comporte[702] un filtre optique accordable Fabry-Pérot [202]. Au moins une source lumineuse connue [302, 304] est utilisée [704] afin de calibrer et corréler des bandes de longueurs d'onde séparées [240, 242, 244] balayées par le filtre optique accordable Fabry-Pérot [202]. Au moins une référence de longueur d'onde [208, 402] est utilisée [706] pour calibrer au moins une bande de longueur d'onde [240, 242, 244] du filtre optique accordable Fabry-Pérot [202]. La référence de longueur d'onde [208, 402] est transférée [708] à une bande de longueur d'onde [240, 242, 244] qui est identifiée à des fins de mesure lorsque la référence de longueur d'onde [208, 402] n'est pas dans une bande de longueur d'onde [240, 242, 244] identifiée à des fins de mesure par le filtre optique accordable Fabry-Pérot [202]. Un signal optique inconnu [404] est balayé [710] à travers le filtre optique accordable Fabry-Pérot [202]. Les longueurs d'onde dans le signal optique inconnu [404] sont spécifiées [712].

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