AUTHOR=Dai Jialiang , Luo Bing , Shen Xiaowen , Han Wenfei , Cui Ruyue , Wu Jintao , Zhang Haofeng , Xiao Wei , Zhong Zheng , Dong Lei , Wu Hongpeng TITLE=A review of optical gas sensing technology for dissolved gas analysis in transformer oil JOURNAL=Frontiers in Physics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2025.1547563 DOI=10.3389/fphy.2025.1547563 ISSN=2296-424X