Yuxing Yuan, Wei Li, Jilong Han, Qiguang Feng, Haitao Yao, Qiang Zheng, Qianggao Hu, Shaohua Yu. Fault monitoring in passive optical network using code division multiplex-based dual-OTDR traces comparison[J]. Chinese Optics Letters, 2017, 15(3): 031201
- Chinese Optics Letters
- Vol. 15, Issue 3, 031201 (2017)
Fig. 1. Principle of a CDM-based dual-OTDR system. LD, laser diode; IM, intensity modulator.
Fig. 2. Principle for identifying the faulty branch.
Fig. 3. The structure of a two-stage PON.
Fig. 4. Set-up of a CDM-based dual-OTDR.
Fig. 5. Set-up of a two-stage PON.
Fig. 6. Results of the measurements.
Fig. 7. Results of the measurements.
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