Methods for Low Crosstalk and Wavelength Tunability in Arrayed-Waveguide Grating for On-Silicon Optical Network

摘要: Arrayed waveguide gratings (AWGs) are used to accomplish complex functionalities in dense wavelength division multiplexing networks, as well signal processing, measurement, characterization or sensing. In this work, we discuss the design and experimental of a 6 × 400 GHz  channel-spaced AWG be multiplexer/demultiplexer silicon-on-insulator based optical transport network. We adopted whiskered-shaped star coupler investigate how reduction reflectivity free propagation region boundaries affects overall performances AWG. demonstrated 2.9 dB insertion loss, which does not include fiber coupling ( $-24.4\,\pm \,0.1$ ) dB crosstalk for realized with single etching technique. Moreover, an efficient fine-tuning (7.5 nm/W) spectral position output channels.