Figure 1 Schematic diagram of a three-dimensional integrated multichannel waveguide grating filter: (a) 1:1 planar beam splitter, (b) 1:1 three-dimensional beam splitter, (c) waveguide gratings ...
The global data traffic has experienced an exponential growth with the rapid development of the Internet of Things (IoT) and the cloud computing. As the key elements of the worldwide communications ...
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