Abstract
We present an optical fiber time transfer scheme through the optical supervisory channel (OSC) in wavelength division multiplexing (WDM) systems. A sub-band of the standard OSC band is used to transmit time signals by only adding sub-OSC filters in commercial WDM systems. The transmission of the existing communication data service is not affected. The wavelengths of bidirectional time transmission in the same sub-band can be very close, or even the same, to maximize the bidirectional propagation symmetry and improve the precision of time transfer. Combined time, optical supervisory signal, and communication data transmission is experimentally demonstrated along a single 100 km optical fiber in a WDM system in laboratory.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Kunfeng Xie, Faxing Zuo, Liang Hu, Jianping Chen, and Guiling Wu
Opt. Lett. 49(4) 875-878 (2024)
Jialiang Wang, Chaolei Yue, Yueli Xi, Yanguang Sun, Nan Cheng, Fei Yang, Mingyu Jiang, Jianfeng Sun, Youzhen Gui, and Haiwen Cai
Opt. Lett. 45(1) 208-211 (2020)
Jingxuan Liu, Ping Lu, Stephen J. Mihailov, Muguang Wang, and Jianping Yao
Opt. Lett. 44(2) 379-382 (2019)