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Optical Engineering

Distributed high-precision time transfer through passive optical networks
Author(s): Guiling Wu; Liang Hu; Hao Zhang; Jianping Chen
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Paper Abstract

We propose a one-point to multipoint distributed time transfer through passive optical networks using a time division multiple access (TDMA) based two-way time transfer. The clock at each clock user node is, in turn, compared with the high-precision reference clock at a master node by a two-way time transfer during assigned subperiods. The corresponding TDMA control protocol and time transfer units for the proposed scheme are designed and implemented. A 1×8 experimental system with a 20 km single-mode fiber in each subpath is demonstrated. The results show that a standard deviation of <60  ps can be reached in each comparison subperiod.

Paper Details

Date Published: 23 September 2014
PDF: 6 pages
Opt. Eng. 53(9) 096113 doi: 10.1117/1.OE.53.9.096113
Published in: Optical Engineering Volume 53, Issue 9
Show Author Affiliations
Guiling Wu, Shanghai Jiao Tong Univ. (China)
Liang Hu, Shanghai Jiao Tong Univ. (China)
Hao Zhang, Shanghai Jiao Tong Univ. (China)
Jianping Chen, Shanghai Jiao Tong Univ. (China)

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