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24 July 2018 Optical phased array antenna with wide steering range using grating array superlattices
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Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 108272U (2018) https://doi.org/10.1117/12.2500591
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China
Abstract
We present a optical phased array antenna with gratings by using shallow ethced grating coupler on silicon-oninsulator for large angle optical beam steering. By decreasing the spacing of antenna to 0.9 μm, The steering range of the antenna can reach as large as 106° with a SNR of -7dB. To prevent crosstalk from grating coupler with small element spacing, we change the width of each grating to cause phase mismatch between adjacent antennas. Specific design is also made to the periods of each antenna in order to make the steering angle of antenna the same. Such grating array superlattices have great potential in LIDAR and free-space communication for its large steering range and small SNR.
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Zijin Wu, Wei Jiang, Jinsong Xia, and Qingzhong Huang "Optical phased array antenna with wide steering range using grating array superlattices", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108272U (24 July 2018); https://doi.org/10.1117/12.2500591
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