Perkins Coie LLP
Drop-before-add optical switching and routing system employing grating-based wavelength selective switches
The present invention discloses a drop-before-add optical routing and switching system. The drop-before-add optical routing and switching system includes an input waveguide for carrying a multiplexed optical signal comprising optical signals transmitted over a plurality of wavelength channels represented by λ1, λ2, λ3, . . . , λN−1 and λN, where N is a positive integer wherein the input waveguide extending over a first direction. The drop-before-add optical routing and switching system further includes a plurality of second direction waveguides extending over a second direction and intersecting at N intersections with the input waveguide. The drop-before-add optical routing and switching system further includes a plurality of wavelength selective grating switches each disposed on one of the N intersections for selectively transmitting an optical signal of a selected wavelength into an associated one of the second direction waveguide.
Integrated Optics Communications Corporation
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Peiching Jinliang Jianjun Ming
Ling Chen Zhang Xu