[WC3] Sensing and Monitoring over Optical Network

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[WC3-4] Dual-Stage Modulation Correlation OTDR for High-Resolution Monitoring in Passive Optical Networks

Yan Li², ○Wu Liu¹, Yiwen Yang¹, Tianqian Zhang¹, Zhiyi Zhong¹, Han Li¹, Xiang Li², Ming Luo¹ (1.China Information Communication Technologies Group Corporation, 2.China University of Geosciences (Wuhan))

Keywords:

Fiber sensing application incl. environmental monitoring using optical network

Utilizing SOA and dual-stage modulation, we achieve correlation OTDR with 14.8dB dynamic range and <2 cm spatial resolution in typical PON scenarios. The approach achieves higher peak-noise-level compared to correlation schemes using continuous signal.