Realization of a polarization-insensitive optical frequency-domain reflectometer using an I/Q homodyne detectionAlin Jderu, Marcelo A. Soto, Marius Enachescu and Dominik ZieglerJ. Eur. Opt. Soc.-Rapid Publ., 17 1 (2021) 22DOI: https://doi.org/10.1186/s41476-021-00165-8