AUTHOR=Yin Yuyi , Ge Tingwu , Li Guanzheng , Xue Chuang , Wang Zhiyong TITLE=Effect of fiber twist angle and non-uniform symmetric alignment on signal combiner JOURNAL=Frontiers in Physics VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2024.1502544 DOI=10.3389/fphy.2024.1502544 ISSN=2296-424X