Summary

Proceedings of the 2012 International Symposium on Nonlinear Theory and its Applications

2012

Session Number:B3L-D

Session:

Number:458

Range Finding and Fault Locating with Chaotic Signal

An-Bang Wang,  Tong Zhao,  Hang Xu,  Na Wang,  Yun-Cai Wang,  

pp.458-461

Publication Date:

Online ISSN:2188-5079

DOI:10.15248/proc.1.458

PDF download (760.2KB)

In this paper, we review our recent works on range finding and fault locating in optical network and wire with chaotic signal. Using a distributed-feedback semiconductor laser with optical feedback as chaotic source, we developed a prototype chaotic optical time domain reflectometer which can achieve a range-independent resolution of 4cm and measurable distance of about 70km. We further present the measurement of faults in the wavelength-division-multiplexing passive optical network (WDM-PON) by using a wavelength-tunable chaotic laser. Moreover, we also demonstrate the location of wire faults or impedance discontinuities with chaotic signal. Our results show that the fault location using wideband chaotic signal is a promising method of precise diagnoses for WDM-PON and electric cables.

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