宮前君（OB）の論文が Applied Physics Express に掲載されました。

周波数シフタを含まない光相関領域反射計によってレイリー散乱を観測した宮前君（OB）の論文が、Applied Physics Express に掲載されました。

T. Miyamae, G. Zhu, T. Kiyozumi, K. Noda, H. Lee, K. Nakamura, and Y. Mizuno, “Observation of Rayleigh scattering by simplified optical correlation-domain reflectometry without frequency shifter,” Appl. Phys. Express, vol. 16, no. 5, 052004 (2023).

We present a method for measuring the transmission loss of an optical fiber using simplified optical correlation-domain reflectometry. By intentionally lowering the spatial resolution of the system, we observe the Rayleigh scattered signal for the first time without the need for a frequency shifter. Using this method, we simultaneously measure the transmission loss, location, and loss of faulty connections along a 10-km-long fiber under test by performing distributed reflected-power measurements of Rayleigh scattering and Fresnel reflection.