Rayleigh Backscattering-Based Optical Fiber Sensor for Cryogenic Liquid-Level Measurement
Cryogenic liquid-level measurement requires a distinct and repeatable liquid–vapor interface signal. In this study, a commercial coherent optical frequency-domain reflectometry (C-OFDR) instrument is used to interrogate an electrically heated SMF-28 probe. The contributions are an analysis of the heat-transfer-based se...