Patent ID: 6891989
Filing Date: 2005-05-10
Classification: A61K,C07C,C07D,G02B,H04Q

Abstract:
1. An optical wavelength-selective switching system comprising: a plurality of optical wavelength-selective switch modules that are connected together, wherein at least two of said wavelength-selective switch modules comprise: (a) a waveguide array comprising a plurality of first direction waveguides extending over a first direction, one of said plurality of first direction waveguides being an input waveguide carrying an optical signal having a plurality of wavelengths, and a plurality of second direction waveguides intersecting with said input waveguide and at least one of said first direction waveguides to form a plurality of intersections; and (b) a plurality of wavelength-selective grating-based switch disposed on at least one of said plurality of intersections; wherein said optical wavelength-selective switch modules have at least first and second outputs, said first outputs from said optical wavelength-selective switch modules being routed to an first optical combiner, said second outputs from said optical wavelength-selective switch modules being routed to a second optical combiner, said first and second optical combiners operative to combine the signals from said first outputs and second outputs respectively.