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The design and fabrication of an integrated-optic 8*8 star coupler is described. The coupler consists of two fan-shaped channel waveguide arrays facing each other and a slab waveguide region located in between them. The coupler geometry was designed and optimised by using the beam propagation method (BPM). The coupler was fabricated on silicon substrate using high-silica planar lightwave circuit (PLC)...
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