Spectral modification through phase modulation with spatial...

G - Physics – 02 – F

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G02F 1/035 (2006.01) G01J 3/433 (2006.01) G02F 2/02 (2006.01) H04B 10/12 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2176113

An optical pulse propagating in an optical guide of am dectro-optic medium (104) interacts with a coplanar RF traveling wave to shift the optical wavelength The RF phase is resynchronized to the optical pulse with spatial periodicity to provide a desired phase relationship between RF and optical radiation. A unidirectional incremental wavelength shifter (104) comprises a frequency multiplexer for soliton communication and a symmetrical sideband modulator of this type (106) varies the spectral width of the probe the illumination in an atomic absorption spectrometer probe beam.

Une impulsion optique qui se propage dans un guide optique d'un support électro-optique (104) interagit avec une onde RF à déplacement coplanaire pour décaler la longueur d'onde optique. La phase RF est régulièrement resynchronisée dans l'espace avec l'impulsion optique pour donner un rapport de phase souhaitée entre les rayonnements RF et optique. Un convertisseur de longueur d'onde incrémentiel unidirectionnel (104) comprend un multiplexeur de fréquences destiné aux communications par solitons, et un modulateur de bande latérale symétrique de ce type (106) fait varier la largeur spectrale de l'illumination par la sonde propre à un faisceau sonde de spectromètre d'absorption atomique.

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