Multiple input waveguide grating router for broadcast and...

Details Multiple input waveguide grating router for broadcast and... Multiple input waveguide grating router for broadcast and...

H - Electricity

04

J

H04J 14/02 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2402730

An optical telecommunications network suitable for carrying broadcast and switched services. The network includes a wavelength division multiplexing (WDM) coupled to a waveguide grating router (WGR). In accordance with the invention, an adjacent input port is connected with the same optical content. Thus, its outputs are adjacent (or wrapped around). According, the optical power in each of the broadcast bands at the outputs remains the same but is reduced by a factor of two in power for each channel but occupying twice as many channels. This has the effect of increasing the signal-to-noise ratio (SNR) by a factor of two.

L'invention concerne un réseau optique de télécommunications permettant de transporter des services radiodiffusés et commutés. Ce réseau comprend un multiplexeur par répartition en longueur d'onde (WDM) couplé à un routeur de réseau de diffraction de guide d'onde (WGR). Selon l'invention, un port d'entrée adjacent est connecté à l'aide du même contenu optique et de ce fait, ses sorties sont également adjacentes (ou enroulées autour de celui-ci). La puissance optique de chaque bande de radiodiffusion au niveau des sorties reste la même, mais elle est divisée en deux dans chaque canal et occupe deux fois plus de canaux, ce qui a pour effet de multiplier le rapport signal sur bruit (SNR) par deux.

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