Author:
Rao Xing,Chen George Y.,Broderick Neil G. R.,Brambilla Gilberto,Wang Yiping
Abstract
We propose a new fiber-optic forward transmission method for long-range distributed vibration sensing. By detecting polarization rotation using dual-wavelength bidirectional operation, 121.5 km sensing range without optical amplification and 0.01 Hz vibration frequency were demonstrated.