Hollow-core fiber Characterization with Correlation-Optical Time Domain Reflectometry
Florian Azendorf, Bernhard Schmauss, Bo Shi, Eric Numkam Fokoua, Radan, Slav\'ik, Michael Eiselt
TL;DR
This paper uses Correlation-OTDR to measure how temperature affects the group delay in hollow-core fibers, showing they are less sensitive to temperature changes than standard fibers, with variations depending on coating type.
Contribution
It introduces a novel application of Correlation-OTDR for characterizing temperature effects in hollow-core fibers, highlighting their reduced sensitivity compared to conventional fibers.
Findings
Hollow-core fibers exhibit lower temperature sensitivity than SSMF.
Temperature-induced group delay variations depend on coating type.
Correlation-OTDR effectively characterizes fiber temperature responses.
Abstract
Using a Correlation-OTDR, we characterized the temperature-induced group delay variations of two nested antiresonant nodeless hollow core fibers. The temperature sensitivity of both is substantially less than for SSMF with some dependency on coating type.
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