Published version is available on IEEE:

J. Li, “Optically Steerable Phased Array Enabling Technology Based on Mesogenic Azobenzene Liquid Crystals for Starlink Towards 6G,” 2020 IEEE Asia-Pacific Microwave Conference (APMC), Hong Kong, Hong Kong, 2020, pp. 345-347, doi: 10.1109/APMC47863.2020.9331345.

Pioneering work:

J. Li, “All-optically Controlled Microwave Analog Phase Shifter with Insertion Losses Balancing,” Engineering Letters, vol. 28, no. 3, pp.663–667, 2020. Available at: http://www.engineeringletters.com/issues_v28/issue_3/EL_28_3_03.pdf