偏波保持ファイバを用いた傾斜利用 BOCDR の動作に関する李(D2)の論文が OSA Continuum に掲載されました。

H. Lee, Y. Mizuno, and K. Nakamura, “Enhanced stability and sensitivity of slope-assisted Brillouin optical correlation-domain reflectometry using polarization-maintaining fibers,” OSA Contin., vol. 2, no. 3, pp. 874-880 (2019).

We show that, even when a polarization scrambler is switched off, PMF-based SA-BOCDR can operate with higher stability than that of standard silica-fiber-based systems. This leads to reduced cost and enables the use of the optimized state of polarization for higher sensitivity. After investigation of the strain/temperature dependencies of the Brillouin frequency shift and the Brillouin spectral power in the PMF, we show that the strain/temperature sensitivity of the PMF-based SA-BOCDR is 1.4 times the value of the standard silica-fiber-based configuration; we then demonstrate distributed temperature measurement with higher stability and sensitivity.