Apparatus for dispersion compensating a signal that...

H - Electricity – 04 – B

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H04B 10/18 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2479115

Apparatus for dispersion compensating a signal (18) that propagates along a signal path (19), which apparatus comprises a grating (1) and a tuning means (2). The grating (1) is characterized by a wavelength operating range (3) and a group delay (4) that varies with wavelength (5), wherein the group delay (4) is equal at a plurality of pairs of wavelengths (6), (7) that are separated within the wavelength operating range (3), and wherein the grating (1) reflects each wavelength pair (6) from the same region (8) of the grating (1), and different wavelength pairs (7) from different regions (9) of the grating (1).

L'invention concerne un appareil de dispersion de compensation d'un signal (18) se propageant sur une trajectoire (19) de signalisation, ledit appareil comprenant un réseau (1) de diffraction et un moyen (2) de réglage. Le réseau (1) de diffraction se caractérise par une plage (3) d'exploitation de longueur d'onde et un temps (4) de propagation de groupe qui varie en fonction de la longueur d'onde (5), le temps (4) de propagation de groupe étant égal à une pluralité de paires de longueurs d'ondes (6, 7) qui sont séparées dans la plage (3) d'exploitation de longueur d'onde, et le réseau (1) de diffraction réfléchissant chaque paire (6) de longueurs d'ondes à partir de la même zone (8) du réseau (1) de diffraction, et différentes paires (7) de longueurs d'ondes à partir de différentes zones (9) du réseau (1) de diffraction.

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