Chinese Optics Letters, 2024, 22 (3): 031303, Published Online: Mar. 7, 2024
Ultralow cross talk arrayed waveguide grating integrated with tunable microring filter array
Abstract
The silicon-based arrayed waveguide grating (AWG) is widely used due to its compact footprint and its compatibility with the mature CMOS process. However, except for AWGs with ridged waveguides of a few micrometers of cross section, any small process error will cause a large phase deviation in other AWGs, resulting in an increasing cross talk. In this paper, an ultralow cross talk AWG via a tunable microring resonator (MRR) filter is demonstrated on the SOI platform. The measured insertion loss and minimum adjacent cross talk of the designed AWG are approximately 3.2 and -45.1 dB, respectively. Compared with conventional AWG, its cross talk is greatly reduced.
Heming Hu, Shiping Liu, Tianwen Li, Yongjie Fan, Hua Chen, Qing Fang. Ultralow cross talk arrayed waveguide grating integrated with tunable microring filter array[J]. Chinese Optics Letters, 2024, 22(3): 031303.