Interleaver, filter included therein, and interleaver system

Details Interleaver, filter included therein, and interleaver system Interleaver, filter included therein, and interleaver system

G - Physics

02

B

G02B 27/28 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2396940

An interleaver having excellent isolation between signal channels and flat transmission spectrum in the vicinity of each channel wavelength. The interleaver comprises an input port for receiving signals of channels, and first and second output ports for outputting signals of first and second channel groups separated from the signals of the channels. The transmission spectrum of the output light from the first output port and that of the output light from the second output port have such a flatness that the difference between the maximum transmissivity and the minimum transmissivity is within 0.4 dB, preferably, 0.2 dB in a wavelength range of .plusmn. 0.06 nm around each signal channel wavelength, and the crosstalk between the adjacent signal channels is suppressed to 20 dB, preferably, -30 dB.

L'invention concerne un séparateur présentant une excellente isolation entre des canaux de signalisation et un spectre de transmission plat à proximité de chaque longueur d'onde de canal. Ce séparateur comprend un port d'entrée pour recevoir les signaux transmis par les canaux, et un premier et un second ports de sortie pour produire les signaux transmis par un premier et un second groupes de canaux séparés des signaux transmis par les canaux. Le spectre de transmission de la lumière de sortie provenant du premier port de sortie et le spectre de transmission de la lumière de sortie provenant du second port de sortie présentent une telle planéité que la différence entre la transmissivité maximum et la transmissivité minimum est égale à 0,4 dB, de préférence, 0,2 dB dans une gamme de longueurs d'onde plus ou moins égale à 0,06 nm autour de chaque canal de signalisation. La diaphonie entre les canaux de signalisation adjacents est supprimée pour atteindre -20 dB, de préférence, -30 dB.

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