A microwave photonic technique is presented to interrogate a 5 m-long fiber, containing 9 mm-long weak FBGs having 10 mm grating separation, used as a distributed sensor. Hot-spots as small as 20 cm have been measured with an accuracy of 0.5 cm
Luc Thévenaz, Zhisheng Yang, Alejandro Dominguez Lopez
Tobias Kippenberg, Maxim Karpov, Hao Song, Xinzhou Su
Kamil Sedlák, Davide Uglietti, Christoph Müller