朱君（M2）・宮前君（M2）の論文が Applied Physics Express に掲載されました。

電気スペクトラムアナライザを撤廃した光相関領域反射計のノイズフロア解析とその影響の低減法を提案した朱君（M2）・宮前君（M2）の論文が、Applied Physics Express に掲載されました。

G. Zhu, T. Miyamae, H. Takahashi, K. Noda, H. Lee, K. Nakamura, and Y. Mizuno, “Compensation of noise floor distortion in long-range simplified optical correlation-domain reflectometry without the use of electrical spectrum analyzer,” Appl. Phys. Express, vol. 16, no. 1, 012013 (2023).

In simplified optical correlation-domain reflectometry (OCDR) without the use of an electrical spectrum analyzer (ESA), the noise floor of the reflectivity distribution is distorted in long-range measurement, which sometimes causes significant error in the distributed reflectivity measurement. Herein, we experimentally analyze the distorted noise floor by high-speed ESA-free OCDR and clarify the origin of the noise floor. Then we show that this noise floor can be compensated by appropriate filtering. Consequently, distributed reflectivity measurement over a 1.1-km-long sensing fiber is properly performed at a repetition rate of 100 Hz.