Technique for detecting the status of wdm optical signals

Details Technique for detecting the status of wdm optical signals Technique for detecting the status of wdm optical signals

G - Physics

02

B

G02B 6/293 (2006.01) H04B 10/08 (2006.01) H04J 14/02 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2410482

A technique for detecting the status of wavelength division multiplexed optical signals is disclosed. In a preferred embodiment, the technique is realized by first splitting an original, multiplexed, polychromatic optical beam into at least two representative, multiplexed, polychromatic optical beams. Next, a first of the at least two representative, multiplexed, polychromatic optical beams is separated according to wavelength into a plurality of optical signal channels (22), wherein each of the plurality of optical signal channels (22) are for communicating a respective, representative optical signal via a respective, representative, discrete, monochromatic optical beam. Finally, the presence or absence of a representative optical signal is detected on each of the plurality of optical signal channels (22).

L'invention concerne une technique de détection de l'état de signaux optiques à multiplexage MRL. En mode de réalisation préféré, on procède d'abord à une division de faisceau optique polychromatique d'origine multiplexé, pour donner au moins deux faisceaux optiques polychromatiques multiplexés représentatifs. Ensuite, un premier des faisceaux en question est séparé, selon une longueur d'onde, sous la forme de plusieurs canaux de signaux optiques (22), chaque canal (22) permettant de transmettre un signal optique représentatif respectif via un faisceau optique monochromatique représentatif discret correspondant. Enfin, la présence ou l'absence de signal optique représentatif est décelée sur chacun des canaux (22) considérés.

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