Uyar, FarukKartaloglu, TolgaUnal, CanberkOzbay, EkmelOzdur, Ibrahim2021-06-182021-06-182020https://hdl.handle.net/20.500.12573/819A simple and effective method for increasing the SNR and range in fp-OTDR based direct -detection distributed acoustic sensors is proposed and experimentally verified. The proposed method results in 11 dB SNR improvement at 66 km. (fD 2020 The Author(s)enginfo:eu-repo/semantics/closedAccessconferenceObject