Kamiura, Yoshiki, Taiga Kurisawa, Chiemi Fujikawa, and Osamu Mikami. “Polymer Spot Size Expanders for High Efficiency Optical Coupling in Optical Interconnection”. Photonics Letters of Poland 14, no. 3 (September 30, 2022): 62–64. Accessed March 29, 2024. https://www.photonics.pl/PLP/index.php/letters/article/view/14-21.