Summary
International Symposium on Nonlinear Theory and Its Applications
2015
Session Number:A3L-C
Session:
Number:A3L-C-4
Precise Fault Location in TDM-PON by Utilizing the Delay Signature of the Chaotic Laser with Optical Feedback
Tong Zhao, Hong Han, Yuncai Wang, XiaoMing Chang, Anbang Wang,
pp.161-164
Publication Date:2015/12/1
Online ISSN:2188-5079
Summary:
We demonstrate a method to precise locate the fault in TDM-PON utilizing the time delay signature of the chaotic laser which generated in the form of optical feedback. A semiconductor laser and whole TDM-PON constitutes a chaos laser generation system with multi-feedback. Each branch corresponds to a time delay signature (peak) in auto-correlation or mutual-information curve with the contribution of each optical feedback at the end of the branch, and the signatures' position represent all reflectors. In TDM-PON monitoring, the disappeared peak represents the fault branch, and emerged peak represents the fault position.