久保田君（B3）の論文が Optical Fiber Technology に掲載されました。

光相関領域反射計（OCDR）とブリルアンOCDRのハイブリッド実装を実現した久保田君（B3）の論文が、Optical Fiber Technology に掲載されました。

H. Kubota, G. Zhu, S. Ochi, T. Ishimaru, H. Takahashi, K. Toge, and Y. Mizuno, “Hybrid implementation of OCDR and BOCDR,” Opt. Fiber Technol., vol. 90, 104129 (2025).

We propose a hybrid implementation of optical correlation-domain reflectometry (OCDR) and Brillouin optical correlation-domain reflectometry (BOCDR), which conventionally required independent experimental setups, enabling simultaneous measurements of the distributions of reflectivity and strain along a fiber under test. Through experimental demonstrations, we highlight the system’s capability to distinguish whether changes in reflectivity are caused by strain or temperature variations. This capability holds significant promise for expanding the applications of OCDR and BOCDR in the health diagnostics of infrastructures and fiber networks. The advantages and limitations of this hybrid system are also discussed in comparison with time-domain hybrid approaches.