Chaos correlation optical time domain reflectometry

作     者：WANG AnBang & WANG YunCai Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024, China 

作者机构：Department of Physics College of Science Taiyuan University of Technology 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2010年第53卷第2期

页      面：398-404页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 60908014, 60777041) the International Cooperation Project of Shanxi Province, China (Grant No. 2007081019) 

主　　题：optical time domain reflectometry chaos laser diode optical feedback 

摘      要：We propose a novel correlation optical time domain reflectometry (C-OTDR) of using broadband chaotic light. This reflectometry has the advantage over the conventional OTDR and the pseudorandom signal C-OTDR in range-independent spatial resolution. We employ a laser diode with feedback from a long fiber ring cavity as the source of chaotic probe light. Experimental and numerical studies show that the chaotic light has broad and flat spectrum, and excellent correlation properties. Using this broadband chaotic laser, we experimentally demonstrate the proposed chaos C-OTDR for locating the fiber reflection events, and analyze the spatial resolution and dynamic range. The results show that the chaos C-OTDR can realize a range-independent resolution of 6 cm and its dynamic range is at least 25 km.