Efficient sampled bragg gratings for wdm applications

G - Physics – 02 – B

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G02B 6/00 (2006.01) G02B 6/02 (2006.01)

Patent

CA 2422547

Techniques for designing efficient gratings with multiple frequency response channels based on sampled patterns based predominantly on phase modulation of the underlying grating structure. Each period of the phase sampled patterns may include contiguous, discrete phase segments with different phase values, or alternatively, a continuous spatial phase pattern that changes the phase of the underlying grating structure. Moderate amplitude modulation of the underlying grating structure by the sampling structure may also be used together with phase modulation. The grating period or the sampling period may be chirped.

L'invention concerne des techniques de conception de réseaux efficaces comprenant plusieurs voies de réponse en fréquence, techniques fondées sur des motifs échantillonnés principalement d'après la modulation de phase de la structure de réseau sous-jacente. Chaque période des motifs échantillonnés de phase peut comprendre des segments de phase contigus, discrets, possédant des valeurs de phase différentes, ou dans une variante de réalisation, elle peut comprendre un motif de phase spatial, continu, qui change la phase de la structure de réseau sous-jacente. Il est également possible d'utiliser une modulation d'amplitude modérée de la structure de réseau sous-jacente, effectuée par la structure d'échantillonnage, avec la modulation de phase. La période de réseau ou la période d'échantillonnage peut subir une compression d'impulsions.

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