Simple and Prospective Refractive Index Sensor involving Trapezoidal Index Profiles in the context of Splice Loss Analysis and Identification of appropriate profileJayee Sinha, Ivy Dutta, Anirban Roy Chowdhury and Somenath SarkarEPJ Web Conf., 370 (2026) 01001DOI: https://doi.org/10.1051/epjconf/202637001001